Multicast of Multimedia Data

The heterogeneous network environment that Internet provides to real time applications as well as the lack of sufficient QoS (Quality of Service) guarantees, many times forces applications to embody adaptation schemes in order to work efficiently. In addition, any application that transmits data over the Internet should have a friendly behaviour towards the other flows that coexist in today’s Internet and especially towards the TCP flows that comprise the majority of flows. We define as TCP friendly flow, a flow that consumes no more bandwidth than a TCP connection, which is traversing the same path with that flow (Pandhye 1999).

Download Full-text

QoS Architectures for the IP Network

Advances in Computer and Electrical Engineering - Advanced Methodologies and Technologies in Network Architecture, Mobile Computing, and Data Analytics ◽

10.4018/978-1-5225-7598-6.ch095 ◽

2019 ◽

pp. 1297-1306

Author(s):

Harry G. Perros

Keyword(s):

Quality Of Service ◽

Differentiated Services ◽

The Other ◽

The Internet ◽

Label Switching ◽

Service Guarantees ◽

Ip Network ◽

Multi Protocol Label Switching ◽

Salient Features

When we call someone over the internet using a service such as Skype or Google talk, we may experience certain undesirable problems. For instance, we may not be able to hear the other person very well, or even worse, the call may be dropped. In order to eliminate these problems, the underlying IP network has to be able to provide quality of service guarantees. Several schemes have been developed that enable the IP network to provide such guarantees. Of these schemes, the multi-protocol label switching (MPLS) and the differentiated services (DiffServ) are the most widely used. In this chapter, some of the salient features of MPLS and DiffServ are reviewed.

Download Full-text

QoS Architectures for the IP Network

Encyclopedia of Information Science and Technology, Fourth Edition ◽

10.4018/978-1-5225-2255-3.ch573 ◽

2018 ◽

pp. 6609-6617

Author(s):

Harry G. Perros

Keyword(s):

Quality Of Service ◽

Differentiated Services ◽

The Other ◽

The Internet ◽

Label Switching ◽

Service Guarantees ◽

Ip Network ◽

Multi Protocol Label Switching ◽

Salient Features

When we call someone over the Internet using a service such as Skype or Google talk, we may experience certain undesirable problems. For instance, we may not be able to hear the other person very well, or even worse, the call may be dropped. In order to eliminate these problems, the underlying IP network has to be able to provide quality of service guarantees. Several schemes have been developed that enable the IP network to provide such guarantees. Of these schemes, the Multi-Protocol Label Switching (MPLS) and the Differentiated Services (DiffServ) are the most widely used. In this article, some of the salient features of MPLS and DiffServ are reviewed.

Download Full-text

How to Provide Quality of Service Guarantees in the Internet? Lessons Learnt from the Airline and Card-Based Payment Sectors

SSRN Electronic Journal ◽

10.2139/ssrn.1625297 ◽

2010 ◽

Author(s):

Zouhaïer M'Chirgui ◽

Thierry Pénard

Keyword(s):

Quality Of Service ◽

The Internet ◽

Service Guarantees ◽

Lessons Learnt

Download Full-text

Data Storage in Cloud Based Real-Time Environments

Advances in Systems Analysis, Software Engineering, and High Performance Computing - Achieving Real-Time in Distributed Computing ◽

10.4018/978-1-60960-827-9.ch013 ◽

2011 ◽

pp. 236-258

Author(s):

Sai Narasimhamurthy ◽

Malcolm Muggeridge ◽

Stefan Waldschmidt ◽

Fabio Checconi ◽

Tommaso Cucinotta

Keyword(s):

Quality Of Service ◽

Real Time ◽

Data Storage ◽

Storage System ◽

Cloud Environment ◽

Last Mile ◽

Service Oriented ◽

Real Time Applications ◽

Direct Applicability

The service oriented infrastructures for real-time applications (“real-time clouds1”) pose certain unique challenges for the data storage subsystem, which indeed is the “last mile” for all data accesses. Data storage subsystems typically used in regular enterprise environments have many limitations which impedes direct applicability for such clouds, particularly in their ability to provide Quality of Service (QoS) for applications. Provision of QoS within storage is possible through a deeper understanding of the behaviour of the storage system under a variety of conditions dictated by the application and the network infrastructure. We intend to arrive at a QoS mechanism for data storage keeping in view the important parameters that come into play for the storage subsystem in a soft real-time cloud environment.

Download Full-text

Quality of Service Architectures

Encyclopedia of Internet Technologies and Applications ◽

10.4018/978-1-59140-993-9.ch060 ◽

2008 ◽

pp. 425-431

Author(s):

Christos Bouras ◽

Apostolos Gkamas ◽

Dimitris Primpas ◽

Kostas Stamos

Keyword(s):

Quality Of Service ◽

Ip Networks ◽

Multimedia Data ◽

Network Resource ◽

Internet Applications ◽

Service Guarantees ◽

Data Flows ◽

Almost All ◽

Speed And Accuracy

IP networks are built around the idea of best effort networking, which makes no guarantees regarding the delivery, speed, and accuracy of the transmitted data. While this model is suitable for a large number of applications, and works well for almost all applications when the network load is low (and therefore there is no congestion), there are two main factors that lead to the need for an additional capability of quality of service guarantees. One is the fact that an increasing number of Internet applications are related to real-time and other multimedia data, which have greater service requirements in order to be satisfying to the user. The other is that Internet usage is steadily increasing, and although the network infrastructure is also updated often, it is not always certain that network resource offerings will be ahead of usage demand. In order to deal with this situation, IETF has developed two architectures in order to enable QoS-based handling of data flows in IP networks. This article describes and compares these two architectures.

Download Full-text