WG2 – Enabling Technologies Status of white paper Olaf Droegehorn, Klaus David University of Kassel Chair for Communication Technology (ComTec)

Page 2 ComTec ©2003 Acknowledgements  Hubert Lauer, Klaus David University of Kassel, Germany  Stefan Arbanowski Fraunhofer Fokus, Germany  Francois Carrez Alcatel, France

Page 3 ComTec ©2003 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)

Page 4 ComTec ©2003 I-centric user environment People News Place ??? Movie Food Money Knowledge

Page 5 ComTec ©2003 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 Layer Service Bundling Service Control Service Discovery Service Creation Environment Monitoring Service Deployment Conflict Resolution Ambient Awareness Personalization Adaptation User Model & Appl. Scenarios

Page 6 ComTec ©2003 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

Page 7 ComTec ©2003 (Mobile) Agent - Technology  Software-Agent defined by:  Delegation, Comware, Autonomy, Control, Action, Intelligence  Typical agents:  Search-Agents  Network-Agents  Desktop-Agents

Page 8 ComTec ©2003 Mobile / distributed databases Taken from:

Page 9 ComTec ©2003 Well defined Semantics  Service & Content Semantics  Techniques like RDF, SemanticWeb, Ontologies, etc. Author Felix Example ny.com Felix Example Name Author Felix Example any.com Name Author

Page 10 ComTec ©2003 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

Page 11 ComTec ©2003 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

Page 12 ComTec ©2003 ETSI OSA / Parlay

Page 13 ComTec ©2003 Parlay X Web Services  High level abstraction of Parlay interfaces

Page 14 ComTec ©2003 Open Service Interfaces (JAIN)  JAIN – Java Application Interfaces for Communications

Page 15 ComTec ©2003 Open Service Interfaces (JAIN 2)

Page 16 ComTec ©2003 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

Page 17 ComTec ©2003 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

Page 18 ComTec ©2003 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

Page 19 ComTec ©2003 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

Page 20 ComTec ©2003 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

Page 21 ComTec ©2003 Sensor Networks Taken from: Distributed Sensors / Services Sensors + Network Applications

Page 22 ComTec ©2003 Intelligent / network-enabled Actors „inhouse bus-systems“ Heating Smart Label with ID

Page 23 ComTec ©2003 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

Page 24 ComTec ©2003 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  kassel.de/content/conference/wwrf-wg2/  Access to confidential documents is granted after registration to one of the Mailing-Lists

Page 25 ComTec ©2003 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