The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Automated detection and diagnosis of the performance faults in cloud and datacenter environments is a crucial task to maintain smooth operation of different services and minimize downtime. We demonstrate an effective machine learning approach based on detecting metric correlation stability violations (CSV) for automated localization of performance faults for datacenter services running under dynamic...
SDN controllers include mechanisms to globally reconfigure the network in order to quickly respond to a changing environment. However, the reconfiguration of the network affects the QoS of data connections. This demo presents an architecture for the SDN controller where a control policy operates on top of an iterative routing solver to dynamically decide whether to reconfigure the network. The control...
Transmitting a good quality voice over wireless networks is a challenge for service providers. Long Term Evolution (LTE), also known as one of the beyond 4G wireless network technology, is designed to have a greater delivery service for multimedia, voice, and video applications to end users. Therefore, modern cellular networks are expected to support both voice and a growing volume of data traffic...
Predicting the performance of cloud services is intrinsically hard. In this work, we pursue an approach based upon statistical learning, whereby the behaviour of a system is learned from observations. Specifically, our testbed implementation collects device statistics from a server cluster and uses a regression method that accurately predicts, in real-time, client-side service metrics for a video...
When a customer uses a service, he might change his initial requirement due to subjective reasons that could not be predicated by service providers. If this happened, service providers need to adjust the current service solution to adapt the new requirement with the objective of minimizing the change amplitude and cost. Placing this problem into AI-planning based service composition (PSC) scenario,...
In Wireless Mesh Networks (WMNs), supporting Quality of Service (QoS) to enable a rich portfolio of applications/real-time multimedia applications is foreseen to be vital for the success of next generation networking technologies. However, today's cutting edge standards are not perfectly equipped to cater to this task. These standards come with an inherent complexity and suffer from innate problems...
As (M2M) Machine-To-Machine, communication continues to grow rapidly, a full study on overload control approach to manage the data and signaling of H2H traffic from massive MTC devices is required. In this paper, a new M2M resource-scheduling algorithm for Long Term Evolution (LTE) is proposed. It provides Quality of Service (QoS) guarantee to Guaranteed Bit Rate (GBR) services, we set priorities...
In this paper, we explore reducing the rate for missing the Quality of Service (QoS) constraint for overloaded real-time systems. The QoS constraint is modeled using (m, k)-constraints, which require that at least m out of any k consecutive jobs of a task meet their deadlines. We proposed a dynamic scheduling scheme to satisfy the (m, k)-constraints for real-time tasks. The simulation results demonstrate...
Providing the Quality of Service in Mobile Ad Hoc Networks (MANETs) is not straightforward due to the unstable wireless link, restricted capacity and irregular availability. It has been shown that the shortest path routing does not lead to a balanced load distribution among nodes. Instead, it offers a heavier load to the central nodes which may lead to an increase in the probability of congestion...
The thermal-aware service rate assignment problem is a major challenge in cyber-physical systems. This problem is complex because of the severe temperature changes in uncertain physical environments and variable power consumption for each application, and these two effects might cause the system to overheat. This study proposes a dynamic-programming based service rate assignment with a feedback control...
Real-time voice communications capabilities over wireless medium, using the Wi-Fi standard IEEE 802.11, have become a potential bottleneck in emerging net-centric enterprise systems used by the DoD and Federal Government agencies. Depending on the priority and precedence of a particular message, mission success may depend on achieving optimal performance with respect to transmission, reception, and...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.