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Integrated IMS Application Services Creation and Execution Platform

Pravin ShankarEmail: spravin@rutgers.edu

Ph.D. Candidate, Rutgers University

Project Team

Hiralal Agarwal

Devasis Bassu (mentor)

Ashish Jain

Intern Presentations, Summer 2005

Pravin Shankar - IMS – 2

Overview

Motivation Project Goals Architecture and Implementation Details Prototype Demonstration Status and Future Work

Pravin Shankar - IMS – 3

Motivation IMS – IP Multimedia Subsystem

– a 3GPP/3GPP2 standard– a unified architecture that supports a wide

range of IP-based services over both packet- and circuit-switched networks

IMS Services: – controlled by external Application Servers

(AS). (e.g. video telephony, Instant Messaging, Gaming)

– the number of third party IMS application service providers is expected to grow tremendously

– services built upon other services (Service Eco-System)

IMS standardizes enablers not services

Need for a Service Creation Environment

IMS Layered Architecture

Source: Light Reading Inc., http://www.lightreading.com

Pravin Shankar - IMS – 4

Project Goals

Develop a service creation platform for creating, testing, debugging and deploying IMS application services

– Built using the Eclipse framework – Current implementation based on SIP Servlet API v1.0

standard (JSR-000116)

Build the Call Notification Service using this platform– Used simulated IMS core network

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IMS Service Lifecycle

Service Provision Service Execution

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Call Notification Demo

sip:alice@hazy

sip:bob-work@hazy

application server(SIP Servlet RI)

pre

sen

ce

call-

noti

fica

tion

IMS Core Network

S-CSCF

uses

HSS

sip:bob-home@hazy

Assumption: Bob has subscribed to the Call Notification service.

1. Alice calls Bob at home 2. Home phone rings

4. Temporarily unavailable !

5. Bob is notified via IM at work

3. Nobody home, times out

Pravin Shankar - IMS – 7

Status– Working prototype implementation of Call Notification

service using the Service Creation Platform

Future Work– Automated testing of IMS services

Lessons Learnt– SIP and IMS Protocol Stack, Model-based Sw Engg.

Acknowledgement– Devasis Bassu, Hira Agarwal, Ashish Jain

Conclusion

Pravin Shankar - IMS – 8

Questions?