This paper introduces a reliability conscious Service Level Agreement (SLA) based admission controller for data networks. Previous research on optimal SLA admission control is discussed, especially the modeling of the admission control problem as a type of Knapsack problem and control architectures developed on this principle. To provide provisions for reliability, the basic SLA specifying a us...

In mobile/wireless 1P network where frequent mobility is encountered, it is required to accommodate Internet Quality of Service (QoS) mechanisms such as Differentiated Services (DiftServ) for mobile hosts. In this paper, we consider the issue of integration of mobile 1P and DiffServ including handoff condition and propose the schemes with hierarchical agent architecture for supporting QoS in mo...

Web services are increasingly used in inter-organizational settings. If an organization depends on the service quality provided by another organization it often enters into a bilateral service level agreement (SLA) to precisely determine service quality and permitted service use. SLAs then also determine penalty payments as risk mitigation against poor service quality and overuse of the service...

Cloud computing is a newly emerged computing infrastructure that builds on the latest achievements of diverse research areas, such as Grid computing, Service-oriented computing, business process management and virtualization. An important characteristic of Cloud-based services is the provision of non-functional guarantees in the form of Service Level Agreements (SLAs), such as guarantees on exe...

Cluster-based Web server systems have become a major means to hosting e-commerce sites. In this paper, we link the issue of resource partitioning scheme with the pricing strategy in a Service-Level-Agreement (SLA) and analyze the problem of maximizing the revenues attained in the hosting of a ecommerce site with a SLA contract by optimally partitioning the server resources among all supported s...

for dissemination Adaptive Services Grid (ASG) is an Integrated Project supported by the Sixth Framework Programme of the European Commission under the Information Society Technology Objective Open Development Platforms for Software and Services. The goal of ASG is to develop a proof-of-concept prototype of an open platform for adaptive services discovery, creation, composition, and enactment. ...

The increasing number of functionally similar services requires the existence of a non-functional properties selection process based on the Quality of Service (QoS). Thus, in this article, authors focus on the provision of a QoS model, an architecture and an implementation which enhance the selection process by the annotation of Service Level Agreement (SLA) templates with semantic QoS metrics....

In the Grid Computing environment, many users need the results of their calculations within a specific period of time. Examples of those users are weather forecasters running weather forecasting workflows, and automobile producers running dynamic fluid simulation workflow Lovas et al. (2004). Those users are willing to pay for getting their work completed on time. However, this requirement must...

An important aspect of managing service-oriented grid environments is management of agreement relationships between service providers and their customers. The key concept in addressing these agreements is service level agreement. In this paper we motivate the need for SLA lifecycle management in services grid and present results of our analysis on functional and non-functional requirements. Aft...

We introduce a generic service model aiming at ensuring Quality of Service management. This modelling approach has been proposed by the Next Generation Network and Service Management project. A fairly high integration level of the tools has been reached using object-oriented paradigm and Model Driven Interoperability approach. We provide an example of Quality of Service management through a Ser...