Providing Quality of Service across Multiple Providers

2010 ◽  
pp. 280-296
Author(s):  
Christos Bouras ◽  
Apostolos Gkamas ◽  
Kostas Stamos
Keyword(s):  
Quality Of Service ◽  
Network Management ◽  
Network Services ◽  
Qos Provisioning ◽  
Backbone Networks ◽  
Important Quality ◽  
Academic Network ◽  
Research And Education

In this chapter, the authors present some of the latest developments related to the provisioning of Quality of Service (QoS) in today’s networks and the associated network management structures that are or will be deployed to support them. They first give a brief overview of the most important Quality of Service proposals in the areas of Layer 2 (L2) and Layer 3 (L3) QoS provisioning in backbone networks, and they discuss the network management structures and brokers that have been proposed in order to implement these services. As a case study, they describe the pan-european research and academic network, which is supported centrally by GEANT and which encompasses multiple independent NRENs (National Research and Education Networks). In the last few years, GEANT has developed and deployed a number of production and pilot services meant for the delivery of quality network services to the end users across Europe.

QoS Routing and Management in Backbone Networks

2010 ◽  
pp. 138-159
Author(s):  
Gilles Bertrand ◽  
Samer Lahoud ◽  
Miklós Molnár ◽  
Géraldine Texier
Keyword(s):  
Quality Of Service ◽  
Network Management ◽  
Traffic Engineering ◽  
Traffic Management ◽  
The Internet ◽  
Collaborative Network ◽  
Backbone Networks ◽  
Competitive Network ◽  
Commercial Relationships

The Internet relies on the cooperation of competitive network operators that typically administrate their networks unilaterally and autonomously to interconnect people and companies in different locations. Recent work calls for extending this organizational model with augmented interactions between network operators, to provide a higher level of endtoend quality of service and to ease certain aspects of traffic management in backbone networks. This chapter presents the emerging collaborative network management models as well as related technologies. In particular, it describes recent techniques for interdomain traffic engineering and for qualityofservice aware routing. The detailed methods are of great interest for network operators and permit the development of new types of commercial relationships between them, ranging from simple interconnection agreements to collaborative traffic management and automated provisioning.

Voice and Video over Gigabit Ethernet and ATM Backbone Networks

2014 ◽  
pp. 174-184
Author(s):  
Nurul I. Sarkar ◽  
Yash Dole
Keyword(s):  
Quality Of Service ◽  
Network Performance ◽  
Performance Metrics ◽  
Asynchronous Transfer Mode ◽  
Atm Networks ◽  
Gigabit Ethernet ◽  
Corporate Networks ◽  
Backbone Networks ◽  
Network Technologies

This chapter aims to report on the performance of voice and video traffic over two popular backbone network technologies, namely Gigabit Ethernet (GbE) and Asynchronous Transfer Mode (ATM). ATM networks are being used by many universities and organizations for their unique characteristics such as scalability and guaranteed Quality of Service (QoS), especially for voice and video applications. Gigabit Ethernet matches ATM functionality by providing higher bandwidth at much lower cost, less complexity, and easier integration into the existing Ethernet technologies. It is useful to be able to compare these two technologies against various network performance metrics to find out which technology performs better for transporting voice and video conferencing. This chapter provides an in-depth performance analysis and comparison of GbE and ATM networks by extensive OPNET-based simulation. The authors measure the Quality of Service (QoS) parameters, such as voice and video throughput, end-to-end delay, and voice jitter. The analysis and simulation results reported in this chapter provide some insights into the performance of GbE and ATM backbone networks. This chapter may help network researchers and engineers in selecting the best technology for the deployment of backbone campus and corporate networks.

Brand Perception and its Relation to Perceived Performance of a Public Sports Service

2015 ◽  
pp. 202-220
Author(s):  
Mario Alguacil Jiménez ◽  
Ferran Calabuig Moreno ◽  
Juan M. Núnez-Pomar ◽  
Josep Crespo Hervás
Keyword(s):  
Quality Of Service ◽  
Data Analysis ◽  
Structural Equations ◽  
Measurement Scales ◽  
Perceived Performance ◽  
Perception Of Quality ◽  
Brand Perception

In sport context, many contributions are involved in the perception of quality and satisfaction in sport services, but in regards to brand perception, such studies are much less common. Virtually no work is aimed at brand awareness of sports services. In the book chapter the authors expose a case study that analyze the users perception of the image of the service and is related to some performance indicators such as quality of service, satisfaction and future intentions. Data analysis is performed using structural equations and measurement scales adapted to sports facilities. The results of this study show that quality is explained by congruence with a high percentage of variance (76.6%), the latter concept being the aspect with the greatest predictive weight. Furthermore, future intentions are explained by attitudes towards the brand and quality, the latter being the element with greater predictive power.

Grid Workflows with Encompassed Business Relationships

2012 ◽  
pp. 1332-1348
Author(s):  
Dimosthenis Kyriazis ◽  
Andreas Menychtas ◽  
Theodora Varvarigou
Keyword(s):  
Quality Of Service ◽  
Service Providers ◽  
Added Value ◽  
Business Relationships ◽  
Qos Provisioning ◽  
Grid Services ◽  
Qos Parameters ◽  
Mapping Process ◽  
Selection Of

This chapter focuses on presenting and describing an approach that allows the mapping of workflow processes to Grid provided services by not only taking into account the quality of service (QoS) parameters of the Grid services but also the potential business relationships of the service providers that may affect the aforementioned QoS parameters. This approach is an integral part of the QoS provisioning, since this is the only way to estimate, calculate, and conclude to the mapping of workflows and the selection of the available service types and instances in order to deliver an overall quality of service across a federation of providers. The added value of this approach lays on the fact that business relationships of the service providers are also taken into account during the mapping process.

A Case Study on the QoS, Energy Consumption and Mobility of WLANs and WMANs

2009 ◽  
pp. 175-196
Author(s):  
Ioannis Papapanagiotou ◽  
Georgios S. Paschos
Keyword(s):  
Quality Of Service ◽  
Energy Consumption ◽  
Life Time ◽  
Wireless Access ◽  
Next Generation Networks ◽  
Telecommunication Services ◽  
Wireless Architectures ◽  
Important Design

The present chapter contains a thorough investigation of Quality of Service, Energy Conservation and mobility in 802.11 and 802.16 standards. Interest on these two technologies arises from the fact that they are designed to cooperate offering wireless access capabilities in Next Generation Networks (NGNs). Under NGN Wireless architectures, key challenges must be taken into account: (a) Broadband technologies are based on QoS Enabled Telecommunication Services; (b) Mobile devices are battery limited. In fact, how to prolong the life time of a mobile device and minimize power usage is a very important design issue; (c) Wireless operation means that the user is expected to roam freely, which must also be taken into account. The dependability of NGN operation is obviously depended on these three features.

Grid Workflows with Encompassed Business Relationship

2011 ◽  
pp. 128-145 ◽  
Author(s):  
Dimosthenis Kyriazis ◽  
Andreas Menychtas ◽  
Theodora Varvarigou
Keyword(s):  
Quality Of Service ◽  
Service Providers ◽  
Added Value ◽  
Business Relationships ◽  
Qos Provisioning ◽  
Grid Services ◽  
Qos Parameters ◽  
Mapping Process ◽  
Selection Of

This chapter focuses on presenting and describing an approach that allows the mapping of workflow processes to Grid provided services by not only taking into account the quality of service (QoS) parameters of the Grid services but also the potential business relationships of the service providers that may affect the aforementioned QoS parameters. This approach is an integral part of the QoS provisioning, since this is the only way to estimate, calculate, and conclude to the mapping of workflows and the selection of the available service types and instances in order to deliver an overall quality of service across a federation of providers. The added value of this approach lays on the fact that business relationships of the service providers are also taken into account during the mapping process.

scholarly journals Information System and Technology Optimization as a Tool for Ensuring the Competitiveness of a Railway Undertaking—Case Study

2020 ◽  
Vol 12 (21) ◽  
pp. 8915
Author(s):  
Juraj Čamaj ◽  
Eva Brumerčíková ◽  
Michal Petr Hranický
Keyword(s):  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Railway Transport ◽  
Mathematical Methods ◽  
Current State ◽  
The World ◽  
Information And Communication ◽  
Research And Education

Information and communication technologies are becoming an increasingly important part of everyday life, as they facilitate many activities, mainly in the world of work, but also in scientific research and education. At present, informatics is one of the fastest growing sectors of the national economy. This development has had a significant impact on improving the quality of transport and transportation processes. The article is focused on the railway transport. It deals with the possibilities of planning the shifts of the train personnel and circulation of the vehicles. It describes the background of the topic. The scientific acquittance lies on the methodology proposed by authors. It presents a new idea of creating the shifts and circulations while being based on the current state and mathematical methods.

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