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WG2 – Enabling Technologies
Status of white paper
Olaf Droegehorn, Klaus DavidUniversity of Kassel
Chair for Communication Technology (ComTec)
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Acknowledgements
Hubert Lauer, Klaus DavidUniversity of Kassel, Germany
Stefan ArbanowskiFraunhofer Fokus, Germany
Francois CarrezAlcatel, France
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Goal of this White-Paper
To summarize existing technologies
To sketch the state of the art
To highlight missing parts / elements / connectors
To foster development in specialized sections
To harmonize different kind of approaches(if possible and reasonable)
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I-centric user environment
People
News
Place
???Movie
Food
Money
Knowledge
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Reference Model
Technology Enablers are
needed for the whole
stack of services and
applications
Terminals
Networks
IP Transport Layer
Network Control & Management Layer
Service Support Layer
Service Execution Layer
Application Support LayerS
ervice B
undling
Service
Control
Service
Discovery
Service
Creation
Environ
men
t M
onitoring
Service
Deploym
ent
Conflict
Resolution
AmbientAwareness
Personalization Adaptation
User Model & Appl. Scenarios
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Technology Enabler Classification
Different Classes of Technologies
Flexible „standard“ technologies• (Mobile) Agents
• Distributed Databases
• Service / Content Semantics
Open (Service) Interfaces and APIs
(Hardware / network enabled) Sensors / Actors
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(Mobile) Agent - Technology
Software-Agent defined by: Delegation, Comware,
Autonomy, Control, Action, Intelligence
Typical agents: Search-Agents Network-Agents Desktop-Agents
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Mobile / distributed databases
Taken from: http://www.oreilly.com/catalog/ordistsys/chapter/ch01.html
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Well defined Semantics
Service & Content Semantics Techniques like RDF, SemanticWeb, Ontologies, etc.
Author
http://www.felixexample.com FelixExample
FelixExample
Name Email
Author
http://www.felixexample.com
http://www.company.com/Personal
FelixExample
Name Email
Author
http://www.felixexample.com
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Technology Enabler Classification
Different Classes of Technologies
Flexible „standard“ technologies• (Mobile) Agents
• Distributed Databases
• Service / Content Semantics
Open (Service) Interfaces and APIs
(Hardware / network enabled) Sensors / Actors
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Open service Interfaces
(ETSI) OSA / Parlay (X) Open Service API for Telco-oriented Applications
JAIN Java Application Interfaces for Communications APIs for rapid
Web-Services / WSDL
SOAP – Simple Object Access Protocol
UDDI – Universal Description, Discovery and Integration
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ETSI OSA / Parlay
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Parlay X Web Services
High level abstraction of Parlay interfaces
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Open Service Interfaces (JAIN)
JAIN – Java Application Interfaces for Communications
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Open Service Interfaces (JAIN 2)
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Web Services (WS)
Web Services are self-contained, modular applications that can be published, located, and invoked over a network, like the World Wide Web
Three basic roles: service provider, -requester and -broker; & three basic operations: publish, find and bind.
A Web Services architecture implementation should allow for incremental security and quality of service models
Web Services can be dynamically composed into applications
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WSDL: WS-Description Language
WSDL: XML-grammar for describing network services as collections of communication endpoints capable of exchanging messages
A WSDL document defines services as collections of network endpoints, or ports
Definitions: Messages: which are abstract descriptions of the data
being exchanged, port types: which are abstract collections of operations;
the concrete protocol and data format specifications for a particular port type constitutes a reusable binding
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SOAP – Simple Object Access Protocol
SOAP is a lightweight protocol for exchange of information in a decentralized, distributed environment
XML based protocol that consists of three parts
An envelope that defines a framework for describing what is in a message and how to process it
A set of encoding rules for expressing instances of application-defined datatypes
A convention for representing remote procedure calls and responses
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UDDI –Universal Description, Discovery and Integration
The focus of Universal Description Discovery & Integration (UDDI) is: Definition of a set of services supporting the description and discovery of
(1) businesses, organizations, and other Web services providers
(2) the Web services they make available, and
(3) the technical interfaces which may be used to access those services
UDDI provides an interoperable, foundational infrastructure for a Web services-based software environment
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Technology Enabler Classification
Different Classes of Technologies
Flexible „standard“ technologies• (Mobile) Agents
• Distributed Databases
• Service / Content Semantics
Open (Service) Interfaces and APIs
(Hardware / network enabled) Sensors / Actors
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Sensor Networks
Taken from: http://eyes.eu.org/architecture.htm
Distributed Sensors / Services
Sensors +Network
Applications
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Intelligent / network-enabled Actors „inhouse bus-systems“
Heating
Smart Label with ID
Smart Label with ID
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Conclusion
Several different technologies are needed to enable all the different kind of services used in an I-centric environment
Each technology has its own specific requirements
For each technology experts are needed
A seamless Integration of these technologies into a well defined service environment is needed
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Contact information
JOIN WG 2, be an active member and drive the main topics
Subscribe to the Mailing-lists and contribute to the White-Papers
WWRF-WG2 Homepage
http://www.comtec.e-technik.uni- kassel.de/content/conference/wwrf-wg2/
Access to confidential documents is granted after registration to one of the Mailing-Lists
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Planned next steps
Fix the table of content / areas of interest for the WP-Technology Enablers
Start to collect/produce input for the selected topics
Foster discussions through the mailing-lists / meetings
