102 research outputs found
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A new framework architecture for next generation e-Health services
The challenge for fast and low-cost deployment of ubiquitous personalized e-Health services has prompted us to propose a new framework architecture for such services. We have studied the operational features and the environment of e-Health services and we led to a framework structure that extends the ETSI/Parlay architecture, which is used for the deployment of standardized services over the next generation IP networks. We expanded the ETSI/Parlay architecture with new service capability features as well as sensor, profiling and security mechanisms. The proposed framework assists the seamless integration, within the e-Health service structure, of diverse facilities provided by both the underlying communication and computing infrastructure as well as the patient's bio and context sensor networks. Finally, we demonstrate the deployment of a tele-monitoring service in smart home environment based on the proposed framework architecture
Convergence-analysis of the internet and the telecommunication architectures
The convergence of the Internet and Telecommunication Architectures is a key issue in today’s telecommunication world. It is foreseen that future versions of UMTS will be all-IP based, and therefore the interest in this area is increasing. The focus in this paper is to show how to access IN-services from the Internet and other IP-based networks. Previous research of the interworking between PSTN and IP-networks will be discussed. The respective advantages of different architectures are presented and some solutions of building a bridge between the protocols used in these networks are described. Further, this paper presents some of the performance problems that may occur in such systems
A framework for abstracting complexities in service delivery platforms
The telecommunication (telco) and Information Technology (IT) industries are converging
into a single highly competitive market, where service diversity is the critical success factor.
To provide diverse services, the telco network operator must evolve the traditional voice service
centric network into a generic service centric network. An appropriate, but incomplete,
architecture for this purpose is the Service Delivery Platform (SDP). The SDP represents
an IT-based system that simplifies access to telco capabilities using services. SDP services
offer technology independent interfaces to external entities. The SDP has vendor-specific
interpretations that mix standards-based and proprietary interfaces to satisfy specific requirements.
In addition, SDP architectural representations are technology-specific. To be
widely adopted the SDP must provide standardised interfaces. This work contributes toward
SDP standardisation by defining a technology independent and extendable architecture,
called the SDP Framework. To define the framework we first describe telecom-IT
convergence and a strategy to manage infrastructure integration. Second, we provide background
on the SDP and its current limitations. Third, we treat the SDP as a complex system
and determine a viewpoint methodology to define its framework. Fourth, we apply viewpoints
by extracting concepts and abstractions from various standard-based telecom and
IT technologies: the Intelligent Network (IN), Telecommunication Information Networking
Architecture (TINA), Parlay, enhanced Telecommunications Operations Map (eTOM),
Service Oriented Architecture (SOA) and Internet Protocol Multimedia Subsystem (IMS).
Fifth, by extending the concepts and abstractions we define the SDP framework. The framework
is based on a generic business model and reference model. The business model shows
relationships between SDP, telco and external entities using business relationships points.
The reference model extends the business model by formalising relationships as reference
points. Reference points expand into interfaces exposed by services. Applications orchestrate
service functions via their interfaces. Service and application distribution is abstracted
by middleware that operates across business model domains. Services, interfaces, applications
and middleware are managed in Generic Service Oriented Architectures (GSOA).
Multiple layered GSOAs structure the SDP framework. Last, we implement the SDP framework
using standard-based technologies with open service interfaces. The implementation
proves framework concepts, promotes SDP standardisation and identifies research areas
Creating a distributed mobile networking testbed environment - through the Living Labs approach
Today, new ways of constructing and delivering
complex wireless and mobile services require more
elaborate and distributed prototyping, testing, and
validation facilities. Testbeds are becoming an important
tool for integrating technology components into the complex
environment of the wireless world and end-users in their
daily life. However technology in itself is no longer valid –
benefits and usefulness for people in their daily life must be
proven before the technology or service can be said to be a
success
A MARK-UP APPROACH TO SERVICE CREATION
The paper presents a new mark-up approach to service creation in Next Generation Networks. The approach allows access to network functions exposed by open application programming interfaces. Based on ontology analysis of the application domain, language constructions are synthesized and formally defined. Language supporting tools are developed. The approach functionality is tested by simulation
Open Standard Query Interface for Geospatial Databases in OSA /Parlay
Student Number :9600874K -
MSc research report -
School of Electrical Engineering -
Faculty of Engineering and the Built EnvironmentTelecommunication networks have evolved from voice only single service networks
to multimedia networks providing bearer services such as voice, data and video
transportation. Moreover, these networks, collectively called Next Generation Networks
(NGNs), enable rapid creation, deployment and management of advanced
services in an efficient manner. However, the initial business model of telcos was
to internally develop and provide these advanced services to customers. In this monopolized
environment, service development is driven by technological availability
rather than customer demands. Furthermore, vendor specific network elements prohibit
the development of re-useable service components, which in turn increases
the time-to-market of services. Deregulation and advances in Distributed Computing
Systems (DCSs) are driving towards open networks and rapid service delivery.
Third party Application Service Providers (ASPs) are envisioned to develop and
supply the services, with the telco providing bearer services. The use of softswitch
architectures such as Open Service Access (OSA) / Parlay (OSA / Parlay) in an
open NGN environment abstract services from core network elements through its
Application Programming Interface (API). Services are thus decoupled from vendor
and protocol specific network equipment and can be provided across a plethora
of network architectures. One major advantage of NGN is the ability to provide
bearer service in a mobile environment. Location Based Services (LBSs) are envisaged
to be an important class of services provided in the NGN environment. For an
LBS service to be complete, a geospatial database is necessary to provide location
information. This report documents the design and implementation of a Geospatial
Data Access Service Capability Feature (GDASCF) as an extension to the OSA
/ Parlay gateway. The GDASCF encapsulates necessary APIs that offer uniform
access to query geospatial databases. One key component of the design is the realization
of the Adapter layer which adapts function calls to an appropriate Database
Management System (DBMS). The introduction of the GDASCF and Adapter layer
provides a solution which results in flexible and rapid service creation
Open Access to Resource Management in Multimedia Networks
The paper is dedicated to mechanisms for open
access to resource management in the Internet Protocol (IP)
multimedia networks. First we present the concept of IP
Multimedia Subsystem (IMS) and explain the IMS functional
architecture, principles of quality of service management and
service control in IMS. Then we describe the idea behind the
opening of network interfaces for third parties so that others
besides the network operator can create and deploy services.
Open Service Access (OSA) and Parlay appear to be the
technologies for value-added service delivery in multimedia
networks. In the paper we take a closer look to the
Parlay/OSA interfaces that allow third party applications to
access the resource management functions in IMS. OSA
"Connectivity Manager" interfaces and OSA "Policy
Management" interfaces are considered. Parlay X Web
Services interfaces provide a higher level of abstraction than
Parlay/OSA interfaces and gain an amazing amount of
support among service developers. We address "Applicationdriven Quality of Service" Parlay X Web Service and
"Policy" Parlay X Web Service also
Future Open Mobile Services
The major barriers for the success of mobile data services are the lack of comprehensible mobile service architectures, their confusing business models and the complexity combined with the inconsistency of the technology enablers. This paper attempts to present a more structured and comprehensive analysis of the current mobile service architectures and their technology enablers. The paper starts with a thorough study of the evolution of mobile services and their business models, and a collection of expectations of the different actors, including the end-user. Next, starting from the original mobile services architecture and environment, an attempt to place the different technology enablers in relation to each other and in relation to their position in the mobile system, will be carried out. Each technology enabler together with their contribution in the enhancement of mobile services are then summarised in a complete and comprehensive way. The paper concludes with a recapitulation of the achievement of the state-of-the-art technology enablers and an identification of future improvements
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