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Software Defined Networking is a promising Internet architecture to deliver multimedia with end-to-end quality of service (QoS) since it enables optimal dynamic management of network resources and on-demand QoS provisioning by a network operator. We propose a framework for server load-balancing over a single-operator OpenFlow network to improve the quality of service levels of video streaming services...
We propose a method for estimating the locations of the causes of failure or deterioration in quality in the service function chains (SFCs) of datacenter networks by using tests packets. Our method is especially effective in service-quality deterioration where no alarms are notified from physical and virtual components. This method models SFC configurations by creating a correlation ID, which identifies...
The Hard Real-Time Ethernet Switch (HaRTES) allows using the same network to handle multiple traffic flows, without compromising the performance of real-time applications. Furthermore, it also provides flexible and on-line scheduling techniques with admission control capabilities, thus real-time communications flows can be added, removed and updated online with strict temporal isolation. However,...
Video applications, which include industrial uses like machine vision, object tracking, surveillance, driving aids, etc. are becoming increasingly common. These sensors produce large amounts of data, being normally compressed at the source nodes to save network bandwidth. As a side effect, video streams exhibit a large variability in their bandwidth utilization. On the other hand, many video applications...
The paper describes a network service model where a service provider (SP) maintains multiple protocol modules to exercise the infrastructure resources under various environment conditions. Each protocol exhibits a certain degree of performance optimality and service resilience in distinct operating regions of the network infrastructure and the environment. During run-time, the SP selects one of the...
About ten years ago the trend of development of Ethernet-based field buses began. Now a (large) number of them are standardized within IEC 61158, a variety of products and a variety of installed systems do exist. Beside the usage of Ethernet as a fast physical layer it also brought the entire TCP/UDP/IP or Internet protocol suite down to the shop floor, establishing the general opportunity to provide...
The increasing diffusion of home area networks (HANs), intended for the delivery of multimedia contents (e.g. TV programs, movies, music) as well as home automation data (e.g. household appliances, lighting and surveillance controls), represents a new challenge for networking. However, at present, most of the available domotic and building automation solutions provide single answers to the market...
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