In the present paper the first SUITED Demonstrator validation campaign results on the network performance and QoS are described. A brief synthesis of the SUITED Demonstrator architecture is depicted, highlighting the characteristics concerning the QoS methodologies stated in the Project and its practical implementation in the Demonstrator architecture. To reach this objective the validation cam...

The contemporary large scale measuring systems in the real-time environment make extensive use of histogramming as a tool for the experimental data quality monitoring. The processing of a large number of data channels requires a suitable computing power where the graphical processors seem to be well suited. Histogramming operations run on the central and graphics processing units are discussed....

While the layered OSI model for networks provides a very clean conceptual framework for network design, certain applications are not completely indifferent to what happens at the lower layers. This is particularly true for multimedia and other real–time applications, which usually have stringent constraints on network performance in order to deliver an acceptable Quality of Experience (QoE) to ...

Global wireless networks enable mobile users to communicate regardless of their locations. One of the most important issues is location management in a highly dynamic environment because mobile users may roam between different wireless systems, network operators, and geographical regions. In this paper, a location-tracking mechanism is introduced that consists of intersystem location updates an...

The Bluetooth technology is the convergence of Mobile Communication and Computing Applications. The Wireless Network era introduces the new generation appliances as an intelligent device, equipped with communication functionalities. Internet worms have become a challenging threat in Internet, in the mean way Bluetooth worm becomes a challenge for Bluetooth Wireless Personal Area Network. Even t...

Many limitations (e.g. complexity, cost, scalability and capability) make the analytical methods and physical testbeds improper to evaluate the performances of wireless sensor networks (WSNs). Simulations can provide a good approximation at lower cost and in less time. Hence, a number of simulation tools for WSN have been developed in the past few years. However, different tools may emphasize o...

Quality of service plays an important role in distributed systems. Cloud computing has been the recent entrant to the distributed system market and has revolutionized computing by changing the way computing resources are accessed and paid for. Users can access cloud services and pay only for the usage similar to utilities. Trust computing systems can be employed for identifying the service prov...

The paper presents an analysis of shortand long-term changes in the QoS of intercontinental connections. First we will show that despite fast and numerous advances in physical layer, link layer, router capacity and new telecommunication cables deployment, QoS measures are hardly progressing in long-term (years) perspective. Transatlantic (North America – Europe) connections will be thoroughly a...

In a multi-hop wireless network, connectivity is determined by the link that is established by the receiving signal strength computed by subtracting the path loss from the transmission power. Two path loss models are commonly used in research, namely two-ray ground and shadow fading, which determine the receiving signal strength and affect the link quality. Link quality is one of the key factor...

GSM network performance and service quality evaluation are the most important steps for the mobile operators as the revenue and customer satisfaction is directly related to network performance and quality. Network service satisfaction assessment especially from the end user perspective is necessary to judge the network performance and maintain service quality standards. In this paper, we apprai...