All rights reserved © 2005, Alcatel Grid services over IP Multimedia Subsystem Antoine Pichot,...

All rights reserved © 2005, Alcatel

Grid services over IP Multimedia Subsystem

Antoine Pichot, Olivier Audouin, Alcatel

GridNets ’06

All rights reserved © 2005, AlcatelGrid services over IMS / GridNets ’06 / 2006-10-02

Grid services over IMS : Agenda

Introduction

Requirements Connectivity on Demand solutions for Grid applications

Proposed Grid utility architecture

Conclusion


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


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


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


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


Overview of existing architectures


Simplified IMS overview

CSCF (Session Controllers)

Application Control plane Application Server

Home Subscriber Base

Multimedia Resource Function

Management plane

Diameter

Proxy Inter-Domain

Service SIP


Grid over IMS

Router

Router

P-CSCF

Enhanced Registrar

(G)MPLS controlled network

P-CSCF = •SIP Proxy•AAA support

SIP

SIP

SIP

Decision

Clusters

Application

Enhanced Registrar = ●SIP Proxy●Location Service●Traffic Engineering Database●X-Optimize Resource Selection :

●Network path & Destination


Grid over IMS

Router

Router

P-CSCF

Enhanced Registrar


SIP REGISTER

SIP REGISTER

Clusters

Application

Enhanced Registrar = ●SIP address <-> IP Address●[email protected] <-> w.x.y.z●Resource Capabilities●[email protected] <-> a.b.c.d●User Preferences

User/Resources Registration


Router

Router


Clusters

Application

Grid over IMS

P-CSCF

Enhanced Registrar

SIP INVITE [email protected] SIP INVITE

Service Request

Resource SelectionEnhanced Registrar = ●Traffic Engineering Database●X-Optimize Resource Selection :

●Network path & Destination


Router

Router


Clusters

Application

Grid over IMS

P-CSCF

Enhanced Registrar

SIP 183 SIP 183

Features Negotiation

SIP 183

SIP INVITE


Router

Router


Clusters

Application

Grid over IMS

P-CSCF

Enhanced Registrar

Before Network Signaling

DecisionCreate Token


Router

Router


Clusters

Application

Grid over IMS

P-CSCF

Enhanced Registrar

DecisionCreate Token

Check Token

Network Signaling

RSVP-TE +token

Decision


Conclusion : Why IMS ?

Common Objectives & Functionalities

IMS is already under trial and deployment by telcos

IMS objectives:Multimedia servicesPerson to person communication

Grid services :Resource access services

Machine to Machinecommunication

Common Objectives:Sell new services

QoS requiredOne network for all services

Common Functions:User Authentication

per session/service chargingDestination selectionFeatures negotiation

Supervision environment


Let’s exchange ideas : [email protected]

www.alcatel.com


Grid over IMS


Grid over IMS

Router

Router

P-CSCFSIP

Enhanced Registrar

SIP

SIP


P-CSCF = •SIP Proxy•AAA support

DecisionRSVP-TE +token

CPUs

Application

Enhanced Registrar = ●SIP Proxy●Location Service●Trafic Engineering Database●X-Optimize Resource Selection :

●Network path & Callee

Create Token

Check Token


Scenario overview

All rights reserved © 2005, Alcatel Grid services over IP Multimedia Subsystem Antoine Pichot,...

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