Differentiated service

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

An active functionality service for e-business applications

Abstract: Service based architectures are a powerful approach to meet the fast evolution of business rules and the corresponding software. An active functionality service that detects events and involves the appropriate business rules is a critical component of such a service-based middleware architecture. In this paper we present an active functionality service that is capable of detecting events in heterogeneous environments, it uses an integral ontology-based approach for the semantic interpretation of heterogeneous events and data, and provides notifications through a publish/subscribe notification mechanism. The power of this approach is illustrated with the help of an auction application and through the personalization of car and driver portals in Internet-enabled vehicles.

Providing service selection and obtaining services

Abstract: Plural service providers each provide services to one or more multicast service systems, which forward service sets formed by bundling received services to a respective multicast operator. The service sets are then multicast in IP datacasting bursts, and can be received by a mobile terminal. Each service includes one or more service components, which have different media formats, e.g. audio, video, game, software, chat, offline web page, etc. The service components include content data and service identification data. A service set schedule giving timing information relating to the transmission of the IP datacasting burst and the transmission frequency is created. An IP burst begins with ESG data. The service set schedule may be part of the ESG data or it may be transmitted separately. The mobile terminal can use the timing information to tune the appropriate channel at the appropriate time to receive and then to decode service identification data relating to a required service, and subsequently obtain required service components thereof. The service components are stored in portions of the memory. Service selection is enabled by a user interface.

A Formal Service Contract Model for Accountable SaaS and Cloud Services

Abstract: Enabled by Service-Oriented Architecture (SOA), recently Software as a Service (SaaS) and Cloud computing are gaining momentum in the industry. An open issue is how to ensure accountability in business services offered through Internet. Traditionally a contract is an effective legal means to uphold accountability in business transactions. In this paper, we propose a novel service contract model called OWL-SC for e-Services. Based on OWL-DL and SWRL, OWL-SC model can be used to disclose obligations of both e-Services consumer and e-Services provider. More importantly, the model allows service participants to monitor the service contract execution and keep track of obligation fulfillment for each party during service delivery. We also propose a graphical model SC-CPN based on Colored Petri-Nets (CPN) to formally model contract obligations and their interdependencies. SC-CPN can also be used to validate the correctness of obligations in OWL-SC through simulation and state space analysis. Finally, we use the Congo Book service as an example to illustrate how to use OWL-SC and SC-CPN to build a service contract model.

An Agent-Based Architecture for Service Discovery and Negotiation in Wireless Networks

Abstract: This paper proposes a market-place based architecture, where users can detect wireless network services, negotiate with the identified service providers about price and service features, select the best service, and finally configure their devices according to the selected service. The architecture automates these different steps by the use of agents that represent the involved entities such as user, service provider and marketplace operator. The architecture has been implemented using FIPA-OS. Performance measurements show that procedures such as service discovery and service negotiation can be performed far below one second despite the significant overhead introduced by the FIPA-OS platform.

Multi-tier composite service level agreements

Abstract: A composite, multi-tier SLA. A composite, multi-tier SLA can include two or more service offerings having both internal use only service level objectives and external service level objectives. The composite, multi-tier SLA further can include two or more SLAs combined into a single, composite SLA. Each of the SLAs can correspond to a specific one of the service offerings. Moreover, the SLAs in the composite SLA can have a hierarchical organization based upon dependencies between the service offerings. Notably, each of the SLAs can correspond to one of an outsourced service offering, an internal service offering and an external service offering. Additionally, at least one of the SLAs can expose an external service level objective of a corresponding internal service offering which has been redefined as an internal use only service level objective in an SLA at a higher tier in the hierarchical organization.