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Model Driven Engineering Technologies
© Copyright IBM Corporation 2007
IBM Haifa Labs
Telecom Service Evolution Environment
Feb 2008Shiri Kremer-Davidson ([email protected])Mila Keren([email protected])Dmitri Pikus([email protected])Model Driven Engineering Technologies Group, Haifa Research Lab
2 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Problems being Addressed:
Developing a quality telecom service is time consuming and error prone
Developers need to be experts in low level protocols and architectures
Underlying technology is frequently changing
Service choreography is difficult
Developed services are hard to maintain
Overview (1 of 3)
Rapid Model Based Development of Quality IMS Services
Radical simplification of service development makes the process accessible to non-experts and cuts down time-to-market.
Service Development
Service Design
Target Audience:
Software professionals (modelers/developers)
May or may not be telecom experts
Are familiar with modeling notations
Telecom and Modeling
Telecom domain professionals are familiar with modeling and its tooling
E.g. for capturing flow charts, sequence charts
3 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Solution Benefits:
Radically simplifies new service development Accessible to non-telecom experts
Reduces design time by an order of magnitude
Dramatically reduces time-to-market for new value-added services Automatically generates executable service
code
Supports service choreography in telecom domain Invokes external services
Overview (2 of 3)Rapid Model Based Development of Quality IMS Services
Radical simplification of service development makes the process accessible to non-experts and cuts down time-to-market.
Service Development
Service Design
SIP Servlet code is generated from SCE UML Models
4 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Overview (3 of 3)
Solution Highlights:
Telecom-specific modeling environment for developing IMS services
Telecom internals are hidden from users
Model transformation produces runnable code
Including service’s business logic
Service oriented development invokes external services from within the model
Using a service registry
Extensible reusable library of telecom specific elements
Rapid Model Based Development of Quality IMS Services
Service Development
Service Design
5 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Objective:
Reduce the resources (time and money) needed to develop telecom services
Bring the benefits of end-to-end MDD to the Telecom Domain
Hide telecom internals from the developer by: Providing a Telecom DSL abstracting over telecom protocols and IMS
internals Providing smart transformations, hiding the technical details Providing an library of reusable telecom specific elements that can be
extended by providers Providing connectivity to a service registry (from multiple platforms)
Provide model creation, validation, debugging and testing tools
Our Approach:
6 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Telecom Services Scope
SCE enables creating Telecom Services (Server Side )
SCE is typically used to define services of the following categories: Medium complexity services that require logic fragments/structural parts
in addition to service invocations• E.g. Meet-Me-Now, CallTunes
Services that require telecom specific characteristics (e.g. call management) and not only SOA related functionality• E.g. Free Calls with Advertisement Service
Services whose internals require maintenance or other telecom environment characteristics• E.g.: billing and authentication
Low-level atomic services that can be used in WEB2 mash-ups• E.g. media player• Need to be defined by IT Specialist
7 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Current Status (Feb 2008)
Created a PoC Telecom Service Creation Environment Over Rational Software Architect
Created two services using the tool (demos on our website):1. Meet – Me – Now (emphasis on Service Choreography)
Enables a user to send am SMS with a meeting invitationto a group of people from his buddy list who are nearby.
2. Free calls with Advertisement (emphasis on IMS Call Manipulation)Enables a client to place a free of charge calls that are interrupted from time to time by short advertisements
Defined Telecom Service Domain Specific Language
Defined a transformation from the model to runnable code Structural parts include: Sipplet, sip.xml, modeled classes Behavioral parts include: state machine and activity implementations
8 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Plan for 2008
1. Enhance Telecom IMS Service Creation Environment Enlarge scope to include billing and authentication
2. Introduce model validation, including: Model consistency/validation rules Model quality rules
3. Introduce model debugging and test capturing tools Ability to “run” the design model (using behavioral diagrams)
9 © Copyright IBM Corporation 2007
IBM Haifa Labs
Model Driven Engineering Technologies
Thanks
