Critical Information Infrastructure Systems Worldwide
Web Services Survey in Telecom Industry
1. A survey on Web Services in Telecommunications Donna Griffin and Dirk Pesch Cork Institute of Technology, Ireland IEEE Communications Magazine, July 2007 鄭遠祥 98753026@nccu.edu.tw 1
2. Outline Introduction SOA and web services SOA benefits in telecommunications Event-driven architecture Supporting web services in telecommunications Application integration Research directions Conclusion 鄭遠祥 98753026@nccu.edu.tw 2
3. Introduction 3 phenomena Changes in regulation Increased competition Technological progress Changes in regulation FCC(USA), Ofcom(UK) Move from monopoly to competition Mobile Virtual Network Operators(MVNOs) Virgin Mobile -> Sprint(USA),T-Mobile(UK) 鄭遠祥 98753026@nccu.edu.tw 3
4. Increased competition Major cost in 3G licenses European failure(French v.s. Finnish) Obsession -> killer application recoup the cost->focus birth of the killer application enviroment New era Cutting costs Stimulating service growth Innovation Reducing churn by consistently exceeding the customer’s QoS expectations 鄭遠祥 98753026@nccu.edu.tw 4
5. 3GPP IP multimedia subsystem Horizontal approaches to service delivery IP-based approach Max revenue Not a walled garden approach Service context changes Micro services 鄭遠祥 98753026@nccu.edu.tw 5
9. Web services 4 organizations World Wide Web Consortium (W3C) Organization for the Advancement of Structured Information Standards (OASIS) Liberty Alliance Web Service Interoperability (WS-I) 鄭遠祥 98753026@nccu.edu.tw 9
10. Web services 3 main standards Simple Object Access Protocol (SOAP) Web Service Description Language (WSDL) Universal Description Discovery Integration (UDDI) 鄭遠祥 98753026@nccu.edu.tw 10
11. SOA BENEFITS IN TELECOMMUNICATIONS 1/3 subscribers on 3G networks by 2010 Over US $1 trillion with 66 percent from 3G Offer increasing levels of value and differentiation Developed easily Deployed quickly Altered efficiently 鄭遠祥 98753026@nccu.edu.tw 11
12. Research by Forrest and IBM 35 SOA projects Increased flexibility 97% decreased cost 71% reduced risk 51% increased revenue 43% enabled new products Sprint The Locator application (integrated with GPS) 鄭遠祥 98753026@nccu.edu.tw 12
13. EVENT-DRIVEN ARCHITECTURE complements SOA Long running asynchronous process capabilities Applications and systems to be constructed in a manner Based on event-condition-action rules 鄭遠祥 98753026@nccu.edu.tw 13
17. SUPPORTING WEB SERVICES IN TELECOMMUNICATIONS Unification of web services Web Service SIP (WSIP) Gateway interfaces Open Service Access Parlay Parlay-X JAIN 鄭遠祥 98753026@nccu.edu.tw 17
18. European Telecommunications Standards Institute (ETSI) Common Object Request Broker Architecture (CORBA) Remote Method Invocation (RMI) Parlay-X HTML XML European Computer Manufacturers Association (ECMA) for Computer Supported Telecommunication Applications (CSTA) ECMA-323 /ECMA-348 /ECMA-366 鄭遠祥 98753026@nccu.edu.tw 18
19. APPLICATION INTEGRATION Existing systems simply cannot be thrown away Enterprise service bus (ESB) Transport services Event services Mediation services Java Messaging Service (JSR 194) 鄭遠祥 98753026@nccu.edu.tw 19
21. RESEARCH DIRECTIONS Semantic web OWL Web Ontology Language for Service (OWL-S) Web Service Modeling Ontology (WSMO) Grid computing (WS-Resources) Web service Management Fujitsu and France Telecom 鄭遠祥 98753026@nccu.edu.tw 21
22. CONCLUSION Deal with Increasing levels of software complexity The future success depends on more mature models /reference architectures / capabilities More coherent / Less conflicting - Web service standards Good ideas are not adopted automatically. They must be driven into practice with courageous patience. 鄭遠祥 98753026@nccu.edu.tw 22
