Probabilistic model for quality of service modelling in packet-switched data networks

Author(s):  
I. Popescu ◽  
E. Staicut
Author(s):  
Manjunath Ramachandra ◽  
Vikas Jain

Meeting the agreed quality of service in a resource crunched data network is challenging. An intelligent element is required to carry out the activities involved. The inferences drawn with different rules need to be merged. Agents are useful for handling this responsibility in data networks and help in resource sharing. An agent is basically an entity that can be viewed as perceiving its environment through sensors and acting upon its environment through effectors. To handle the network traffic, the agents acquire the traffic status and provide the information on the availability of resources to the source of the traffic. Hence the study on agent communication has become important. Intelligent agents continuously perform the activities including perception of dynamic conditions in the environment, reasoning for interpretation of the perceptions, solve problems, draw inferences and determine actions.


2005 ◽  
Vol 9 (6) ◽  
pp. 413-422 ◽  
Author(s):  
Anthony J. Saliba ◽  
Michael A. Beresford ◽  
Milosh Ivanovich ◽  
Paul Fitzpatrick

2017 ◽  
Vol 9 (3) ◽  
pp. 329-333
Author(s):  
Liudas Duoba

OpenFlow currently is the only one protocol that can implement ideas of the Software Defined Networking pioneers. The Protocol is unique because of ability to separate any network device control and data planes. All network intelligence is (logically) centralized in dedicated controllers. Objective of this article to propose a new method that enhances QoS in data networks by using OpenFlow protocol.


Inge CUC ◽  
2018 ◽  
Vol 14 (2) ◽  
pp. 106-115
Author(s):  
Jonier Hernando Porras Duque ◽  
Daniel Orlando Ducuara Beltrán ◽  
Gustavo Adolfo Puerto Leguizamón

Introduction: The traditional networks mostly implement devices where the control plane is distributed and mixed with the data plane; this fact does not allow a fast evolution towards a process that contributes to improving the transport of services. Otherwise, Software Defined Networking is a set of transport services that optimize the use of resources as these have a centralized network structure. Objective: To determine the aspects that enable software-defined networking to provide quality of service features in data networks. Methodology: This study is performed through network simulation over the same base network and under the same working conditions by carrying out measurements of the packet forwarding response time and management of the transported bandwidth. This study includes the demonstration of the multimedia content transport over a network architecture defining priorities to the links. Results: The outcomes show how the Software Defined Networking achieves better management of data transmission through the base network. In the same way, the previous outcomes are reinforced with those obtained in the quality of service test performed on the streaming of a multimedia flow. Conclusions: Due to the centralized control of Software Defined Networking, forwarding functions with the quality of service features are enabled in data networks based on layer-2 devices.


Author(s):  
Luiz A. DaSilva

The original communication networks were designed to carry traffic with homogeneous performance requirements. The telephone network carried real-time voice, with stringent latency bounds, and therefore used circuit-switched technologies with fixed bandwidth allocated to each call. Original data networks were used for electronic mail and file exchange, and therefore employed packet switching and provided best-effort service.


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