Multi-constraint quality-of-service routing will become increasingly important as the Internet evolves to support real-time services. It is well known however, that optimum multi-constraint QoS routing is computationally complex, and for this reason various heuristics have been proposed for routing in practical situations. Among these methods, those that use a single mixed metric are the mo...

In a Service-Oriented System (SOS), service requesters specify tasks that need to be executed and the quality levels to meet, whereas service providers advertise their services’ capabilities and the quality levels they can reach. Service selectors then match to the relevant tasks, the candidate services that can perform these tasks to the most desirable quality levels. One of the key problems i...

IP only provides best-effort service. This paper highlights the importance of quality of service (QOS) in data networks and reviews four important standards for providing quality of service; ATM, IntServ, DiffServ, and MPLS. The paper then compares ten contemporary products in terms of how they provide quality of service. See Also : QoS in Data Networks: Protocols and Standards | QoS/Policy/Con...

In general, Policy-based approaches play an important role in the management of web services, for instance, in the choice of semantic web service and quality of services (QoS) in particular. The present research work illustrates a procedure for the web service selection among functionality similar web services based on WS-Policy semantic matching. In this study, the procedure of WS-Policy publi...

This paper describes a software mechanism, called quality events, that utilizes applicationand/or system-level service extensions to provide quality of service (QoS) guarantees to end users. Such extensions offer flexibility in: (1) how applicationand/or system-level services are dynamically managed to maintain required quality, (2) when such management occurs, and (3) where this service manage...

QoS (Quality-of-Service) is an important topic in cloud computing. It is very difficult to make a decision on choosing the cloud services depending on QoS requirements. These requirements have to be satisfied by both cloud service providers and cloud users. So, Optimal Service Selection is needed to obtain high quality cloud applications. With the increasing number of Cloud services, Quality-of...