Differentiated service

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

System and method for service level management

Abstract: The system and method described herein may provide service level management, wherein business processes may be composed of services. A state of the service may be defined by one or more service parameters, which depend upon performance of network components that support the service (e.g., component parameters). The state of the service may depend, for example, on a collection of service parameter values for availability, reliability, security, integrity, and response time. A service level agreement is a contract between a supplier and a customer that identifies services supported by a network, service parameters for the service, and service levels (e.g., acceptable levels for each service parameter).

MoSCoE: AN APPROACH FOR COMPOSING WEB SERVICES THROUGH ITERATIVE REFORMULATION OF FUNCTIONAL SPECIFICATIONS

Abstract: We propose a specification-driven approach to Web service composition. Our framework allows the users (or service developers) to start with a high-level, possibly incomplete specification of a desired (goal) service that is to be realized using a subset of the available component services. These services are represented using labeled transition systems augmented with guards over variables with infinite domains and are used to determine a strategy for their composition that would realize the goal service functionality. However, in the event the goal service cannot be realized using the available services, our approach identifies the cause(s) for such failure which can then be used by the developer to reformulate the goal specification. Thus, the technique supports Web service composition through iterative reformulation of the functional specification. We present a prototype implementation in a tabled-logic programming environment that illustrates the key features of the proposed approach.

Service domains for ambient services: concept and experimentation

Abstract: We investigate ambient services, which we define as services that are related to the surrounding physical environment of the user, are locally useful and can be considered a form of location-based services. We introduce the notion of service domain which refers to the geographical area of relevance and utility for ambient services. We also consider a stereotypical case where a user might be within multiple service domains at the same time (when the service domains containing the user overlap) and so, can utilize a collection of services comprising services selected from each of the service domains containing the user. A language of operators is given for defining such a collection of services in terms of constituent services from the overlapping service-domains. Moreover, we describe and evaluate a prototype system that shows how to compute the services for a user in multiple service domains. The result is a framework for reasoning about ambient services for filtering or proactively suggesting mobile services based on geographical boundaries.

A Hierarchical Soft RAN Slicing Framework for Differentiated Service Provisioning

Abstract: Network slicing is a key technology to allow resource sharing among heterogeneous operators/ services, which achieves QoS isolation for service provisioning in future communication networks. In this article, a comprehensive hierarchical soft-slicing framework is proposed to enable software-defined radio access networks supporting differentiated services with diverse QoS requirements. The proposed framework consists of network-level slicing and gNodeB-level slicing. In the network level, radio RBs are pre-allocated to each gNodeB in a large time scale, while in the gNodeB level, the pre-allocated RBs are dynamically scheduled to the services in response to the small time scale (mini-slot-level) RB request variations. The proposed framework allows the accommodation of time-varying traffic loads of differentiated services over multiple gNodeBs, while enabling dynamic inter-gNodeB RB sharing to increase the resource multiplexing gain. A case study is presented to demonstrate the effectiveness of the proposed framework, followed by a discussion on open research issues.

Dynamic traffic routing and service management controls for on-demand application services

Abstract: A network routing and service control design enables an internet protocol (“IP”) network to effectively divert, on-demand, a given set of IP traffic flow from its normally followed network path to a network-attached application service processing complex and then enable the IP network to re-inject post-processed (e.g., Distributed Denial of Service scrubbed) traffic back into the network for routing to an originally-intended destination. This design also provides a sophisticated control mechanism for application service providers and/or customers/users for service management purposes. For example, application service providers can manage network and service processing resources and customers/users can manage their service requests.