Differentiated service

About: Differentiated service is a research topic. Over the lifetime, 5539 publications have been published within this topic receiving 105225 citations.

SCIM (Service Capability Interaction Manager) Implementation Issues in IMS Service Architecture

Abstract: Reusing service capabilities to implement different integrated services in Next Generation networks (NGN) provides flexible and open service architecture capable of creating innovative services that do not need to be standardized and are based on the standardized service capabilities. In this architecture, invoking each integrated service may provoke the invocation of multiple service capabilities. The service architecture must therefore provide a mechanism to manage the interactions and the incompatibilities that may occur between these service capability invocations. Due to the shortcomings in the NGN service architecture domain for defining such mechanisms, we define in this paper, new architectural concepts regarding the implementation of a service capability interaction manager as well as the functionalities that this new entity must provide to avoid conflicts between service capability interactions in order to implement integrated services based on the standardized service capabilities.

Differential QoS support in Web Services Management

Abstract: The variation of contexts in which a Web service could be used and the resulting variation in Quality of Service (QoS) expectations makes a clear case for further research to extend Web services management platforms with more sophisticated control mechanisms to cater for differentiated service offerings. However, most Web services platforms are based on a best-effort model, which treats all requests uniformly, without any type of service differentiation or prioritization. This paper presents WS-DiffServ, a service differentiation middleware based on prioritization which leverages service requestor profile to classify service requests. We first explore the typical generic requirements of a differential QoS support in Web services management. We then present in detail the design of a priority based differentiated responsiveness platform for Web services.

Clustering Web Services for Automatic Categorization

Abstract: Analyzing the functionality of Web services is the basis of using Web services effectively and efficiently. The first step in such analysis of Web services is to categorize different services, which may be offered by different service providers, based on their functionalities. In this paper, we present a clustering-based approach to Web service categorization in order to form a hierarchy of service taxonomy. Our novel clustering scheme takes into consideration not only individual factors such as input or output of service operations, but also the latent inter-relationships among the individual factors. Given a set of services that may or may not have been categorized, we adopt individual methods to handle the issue and mark out their classification labels in terms of a common (given) taxonomy, such as UNSPSC. When a new service description is published, the unclassified service is compared with the classified ones and measures of the likelihood that the new service description is belonging to each cluster are calculated. Based on this calculation, the service will be assigned to a suitable category.

An end-to-end service provisioning scenario for the residential environment

Abstract: The home of the future is here, or at least the hardware to support it. Home environments are currently characterized by the existence of a wide variety of connected devices. This infrastructure is useful in itself. However, we could get much more from it. We could use it to provide advanced services to the end user. This article presents the experience acquired during the design and implementation of an end-to-end service provisioning platform. We have followed a standards-driven approach to leverage existing middleware with open source assets. The selected middleware-platforms are the OSGi service platform at the residential end, J2EE technologies at the service provider end, and Web services for coarse-grained coordination and interaction between the different actors. In this way we create a suitable environment for all the stakeholders.

Enabling a scalable service-oriented architecture with semantic Web Services

Abstract: Service-oriented architectures (SOAs) aim to improve the ability of organisations to quickly create and reconfigure IT systems to support new and rapidly changing customer services. The key idea is to move away from monolithic systems, towards systems which are designed as a number of interoperable components, for enhanced flexibility and reuse. This paper will describe how semantic descriptions of such services can improve the service discovery and composition processes and move towards an SOA that is more dynamic and scalable. An account of a case study involving BT Wholesale's B2B gateway is given.