Intensive efforts are made in the Web services selection literature by these days mainly because of the overwhelming interest of the community in the services provided over the Web. In selecting best services, the non functional properties of such services are proven to be more and more important; these describe the Quality of service that is the key factor in the selection process.In this pape...

The break of the 2 and the 3 century is in telecommunications characterised by an integration of various services that are provided by different networks into a single network. This trend is called service integration or network integration. Currently, this integration is not only focused on research work, but the solutions come to be implemented in practice as well. Service integration results...

Over the past several years there has been a considerable amount of research within the field of quality of service (QoS) support for distributed multimedia systems. To date, most of the work has occurred within the context of individual architectural layers such as the distributed system platform, operating system, transport subsystem and network. Much less progress has been made in addressing...

Research in the area of end-to-end Quality of Service (QoS) has produced important results over the last years. However, most solutions are tailored for specific environments, assume layered system architectures, or integrate QoS management within the respective service components, such that the QoS management functionality is not easily reusable. Furthermore, proprietary QoS solutions are not ...

Over the past several years there has been a considerable amount of research within the field of quality of service (QoS) support for distributed multimedia systems. To date, most of the work has occurred within the context of individual architectural layers such as the distributed system platform, operating system, transport subsystem and network. Much less progress has been made in addressing...

We address the QoS (Quality of Services) bandwidth reservation and service work scheduling mechanism of how to fairly provide advance quality of service in polling based TDM networks like Ethernet PON (Passive Optical Networks). Unlike existing differentiated QoS supporting schemes, such as SP (Strict Priority) based DBA(Dynamic Bandwidth Allocation) or static work scheduling with min-max theor...

With the fast-pacing deployment of wireless sensor network(WSN) services, service ranking becomes more and more important. However, current service ranking methods mostly ignore the physical-level quality variation, making service ranking inaccurate. To address this problem, in this paper we propose a novel QoS-based ranking approach for WSN services, which employs the physical-level context aw...

This section introduces the notion of Quality of Service as it is currently provided by the Internet. As of today, the Internet offers a point-to-point delivery service, which is based on the "best effort" delivery model. In this model, data are delivered to their destinations as soon as possible, but with no bandwidth or latency guarantees. Using protocols, such as TCP, the highest guarantee t...

The fundamental paradigm shift from a productto a service-oriented economy implies novel technical and organizational challenges. The value generated by a service is mainly represented by intangible elements exposed at execution (Hill 1977). Therefore, a service consumer expects a service to function reliably and to deliver a consistent outcome at a variety of levels, i.e. Quality of Service (Q...

Due to the rapid development of Web technologies, Internet applications increasingly use different programming languages and platforms. Web services technologies were introduced to ease the integration of applications on heterogeneous platforms. The quality of Web services has received much attention as it relates to the service discovery process. However, less work has been done on issues rela...