QoS Architectures for the IP Network

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.

QoS Architectures for the IP Network

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.

Multicast of Multimedia Data

2008 ◽  
pp. 1781-1788
Author(s):  
Christos Bouras ◽  
Apostolos Gkamas ◽  
Dimitris Primpas ◽  
Kostas Stamos
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Heterogeneous Network ◽  
Multimedia Data ◽  
The Other ◽  
The Internet ◽  
Service Guarantees ◽  
Tcp Friendly ◽  
Real Time Applications

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).

Multicast of Multimedia Data

2008 ◽  
pp. 316-322
Author(s):  
Christos Bouras ◽  
Apostolos Gkamas ◽  
Dimitris Primpas ◽  
Kostas Stamos
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Heterogeneous Network ◽  
Multimedia Data ◽  
The Other ◽  
The Internet ◽  
Service Guarantees ◽  
Tcp Friendly ◽  
Real Time Applications

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).

Scalable Internet Architecture Supporting Quality of Service (QoS)

2010 ◽  
pp. 739-759
Author(s):  
Priyadarsi Nanda ◽  
Xiangjian He
Keyword(s):  
Quality Of Service ◽  
The Internet ◽  
Service Oriented ◽  
Multi Protocol Label Switching ◽  
Multimedia Technologies ◽  
Major Shift ◽  
End To End ◽  
Scalable Internet ◽  
Priority Levels

The evolution of Internet and its successful technologies has brought a tremendous growth in business, education, research etc. over the last four decades. With the dramatic advances in multimedia technologies and the increasing popularity of real-time applications, recently Quality of Service (QoS) support in the Internet has been in great demand. Deployment of such applications over the Internet in recent years, and the trend to manage them efficiently with a desired QoS in mind, researchers have been trying for a major shift from its Best Effort (BE) model to a service oriented model. Such efforts have resulted in Integrated Services (Intserv), Differentiated Services (Diffserv), Multi Protocol Label Switching (MPLS), Policy Based Networking (PBN) and many more technologies. But the reality is that such models have been implemented only in certain areas in the Internet not everywhere and many of them also faces scalability problem while dealing with huge number of traffic flows with varied priority levels in the Internet. As a result, an architecture addressing scalability problem and satisfying end-to-end QoS still remains a big issue in the Internet. In this chapter the authors propose a policy based architecture which they believe can achieve scalability while offering end to end QoS in the Internet.

Libraries as Publishers of Digital Video

2011 ◽  
pp. 37-51
Author(s):  
William D. Kearns
Keyword(s):  
Quality Of Service ◽  
Academic Library ◽  
The Internet ◽  
Academic Environments ◽  
Service Guarantees ◽  
Database Technology ◽  
The Media ◽  
Card Catalog ◽  
Media Formats

Dubbed as the next “Killer Application” (Hanss, 2001), digital video’s anticipated impact on computer networks is enormous. Few other applications are so severely impacted by networks incapable of delivering quality of service guarantees for the latency and delay with which video stations receive information packets. The goal of this chapter is to briefly discuss the teaching and research uses of video materials in academic environments, inform librarians of the various forms into which video materials may be encoded, the strengths and weaknesses of the media formats, and to argue for a comprehensive implementation plan when considering the distribution of video resources. We will conclude the chapter with an illustration of how one academic library employed database technology to create a video card catalog accessible from the Internet.

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