نتایج جستجو برای: quality of service qos

تعداد نتایج: 21236663  

Journal: :Wireless Networks 2015
Michael Oche Rafidah Md Noor Ali Jalooli

In order to deliver a qualitative Internet Protocol Television (IPTV) service over vehicular ad hoc networks (VANETs), a quality of service (QoS) mechanism is needed to manage the allocate of network resources to the diverse IPTV application traffic demands. Unlike other mobile network, VANETs have certain unique characteristic that presents several difficulties in providing an effective QoS. S...

Journal: :Parallel Processing Letters 2015
Giorgis Georgakoudis Charles Gillan Ahmed Sayed Ivor T. A. Spence Richard Faloon Dimitrios S. Nikolopoulos

We present a mathematically rigorous Quality-of-Service (QoS) metric which relates the achievable quality of service metric (QoS) for a real-time analytics service to the server energy cost of offering the service. Using a new iso-QoS evaluation methodology, we scale server resources to meet QoS targets and directly rank the servers in terms of their energy-efficiency and by extension cost of o...

2013
Paul Karänke Jörg Leukel Vijayan Sugumaran

Determining the QoS (quality of service) of composite Web services is of high importance for both service providers and service consumers. Heterogeneity of service descriptions, however, often hinders the aggregation of QoS parameters. We propose ontology-based QoS aggregation that integrates the semantics of QoS parameters and their aggregation into the overall aggregation process. The contrib...

2013
Sonal Dubey

Cloud computing systems promise to offer subscription-based, enterprise-quality computing services to users worldwide. As the demand for delivering services to a large number of users has increased, they need to offer differentiated services to users and meet their expected quality requirements. Service-Oriented Computing (SOC) enables the alignment of loosely coupled services with different le...

2004
Lei Chen Wendi Heinzelman

In this paper, we present a quality of service (QoS) architecture for supporting real-time data transmission in mobile ad hoc networks (MANETs). The QoS architecture includes a QoS transport layer, QoS routing, queue management and a priority MAC protocol. Through simulations, we find that the QoS architecture reduces packet delay and greatly improves the quality of realtime video streams in MA...

2010
Stephen S. Yau Jing Huang Yin Yin

Service-oriented architecture facilitates rapid development and management of large-scale distributed servicebased systems (SBS), where new workflows are composed of available services. Besides services’ capabilities, the qualities of services (QoS) also need to be considered in service composition in order to have high-quality workflows. The QoS profiles of services provided by their service p...

2012
Brigitte Kerhervé Anne Pons Gregor v. Bochmann Abdelhakim Hafid

In distributed multimedia systems, since multimedia objects are voluminous and unstructured, manipulation, transfer and visualization of such objects can require a lot of time and resources. It then becomes essential to prevent unsatisfactory information delivery. For that purpose, Quality of Service (QoS) management appears as an essential function supplied by distributed multimedia systems to...

Journal: :CoRR 2013
M. Subha K. Saravanan

Building high quality cloud applications becomes an urgently required research problem. Nonfunctional performance of cloud services is usually described by quality-of-service (QoS). In cloud applications, cloud services are invoked remotely by internet connections. The QoS Ranking of cloud services for a user cannot be transferred directly to another user, since the locations of the cloud appli...

2005
Radu Jurca Boi Faltings

Most web services need to be contracted through service level agreements that typically specify a certain quality of service (QoS) in return for a certain price. We propose a new form of service level agreement where the price is determined by the QoS actually delivered. We show that such agreements make it optimal for the service provider to deliver the service at the promised quality. To allo...

ژورنال: محاسبات نرم 2016

New generation of wireless networks, LTE and WiMAX, supports many services which consume a lot of resources (such as VOIP, Video Conference, Digital Video, Multimedia streams and online Multi-player Games). Supporting multi-media services in wireless communication systems provide new resource allocation challenges. Because of high loads in downlink, efficient resource allocation is vital in dow...

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