All rights reserved © 2005, Alcatel Grid services over IP Multimedia Subsystem  Antoine Pichot, Olivier Audouin, Alcatel  GridNets ’06

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 2 Grid services over IMS : Agenda  Introduction  Requirements  Connectivity on Demand solutions for Grid applications  Proposed Grid utility architecture  Conclusion

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 3 Objectives  What we want : Network operators to provide computing & storage utility services  Control & Co-allocate resources (Network, CPUs, Storage…)  Added Value : Resource virtualization (location & heterogeneity) Application able to request service with QoS constraints Network automatically provision resources  And compliant with Open Grid Service Architecture

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 4 Requirements From the OGSA framework  Information services (Resource Discovery)  Job Execution (Resource Selection)  Resource Management (Supervision)  Security (Authorization Authentication Accounting)  Self-Management (Optimization) 2 approaches  State of the Art : –Network provides connectivity services with QoS constraint  Our proposal : –Network provides Grid services

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 5 Overview of QoS techniques Over-provisioning (Current internet) Static-provisioning (PSTN) End-to-end probes and Application self admission control Bandwidth Broker Signaled provisioning Feedback based provisioning Diffserv (no guarantee, but differentiation) Combination of these techniques

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 6 Focus on Signaled provisioning approaches Mono-Signaling – Network Level Mono-Signaling – Application level,  With a central Bandwidth Broker  Interconnected to a distributed network control plane Dual Signaling

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 7 Overview of existing architectures

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 8 Simplified IMS overview CSCF (Session Controllers) Application Control plane Application Server Home Subscriber Base Multimedia Resource Function Management plane Diameter ProxyInter-Domain Service SIP

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 9 Grid over IMS Router P- CSCF Enhanced Registrar (G)MPLS controlled network P-CSCF = SIP Proxy AAA support SIP Decision Clusters Application Enhanced Registrar = ● SIP Proxy ● Location Service ● Traffic Engineering Database ● X-Optimize Resource Selection : ● Network path & Destination

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 10 Grid over IMS Router P- CSCF Enhanced Registrar (G)MPLS controlled network SIP REGISTER Clusters Application Enhanced Registrar = ● SIP address IP Address ● w.x.y.z ● Resource Capabilities ● a.b.c.d ● User Preferences User/Resources Registration

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 11 Router (G)MPLS controlled network Clusters Application Grid over IMS P- CSCF Enhanced Registrar SIP INVITE SIP INVITE Service Request Resource Selection Enhanced Registrar = ● Traffic Engineering Database ● X-Optimize Resource Selection : ● Network path & Destination

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 12 Router (G)MPLS controlled network Clusters Application Grid over IMS P- CSCF Enhanced Registrar SIP 183 Features Negotiation SIP 183 SIP INVITE

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 13 Router (G)MPLS controlled network Clusters Application Grid over IMS P- CSCF Enhanced Registrar Before Network Signaling Decision Create Token

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 14 Router (G)MPLS controlled network Clusters Application Grid over IMS P- CSCF Enhanced Registrar Decision Create Token Check Token Network Signaling RSVP-TE + token Decision

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Conclusion : Why IMS ?  Common Objectives & Functionalities  IMS is already under trial and deployment by telcos IMS objectives: Multimedia services Person to person communication Grid services : Resource access services Machine to Machine communication Common Objectives: Sell new services QoS required One network for all services Common Functions: User Authentication per session/service charging Destination selection Features negotiation Supervision environment

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 16 Let’s exchange ideas :

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 17 Grid over IMS

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 18 Grid over IMS Router P- CSCF SIP Enhanced Registrar SIP (G)MPLS controlled network P-CSCF = SIP Proxy AAA support Decision RSVP-TE + token CPUs Application Enhanced Registrar = ● SIP Proxy ● Location Service ● Trafic Engineering Database ● X-Optimize Resource Selection : ● Network path & Callee Create Token Check Token

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 19 Grid over IMS Router P- CSCF SIP Enhanced Registrar SIP (G)MPLS controlled network P-CSCF = SIP Proxy AAA support Decision RSVP-TE + token CPUs Application Enhanced Registrar = ● SIP Proxy ● Location Service ● Trafic Engineering Database ● X-Optimize Resource Selection : ● Network path & Callee Create Token Check Token

All rights reserved © 2005, Alcatel Grid services over IMS / GridNets ’06 / Page 20 Scenario overview