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Hybrid Modeling and Simulation Platform

for Rapid Prototyping and Testing of

Ad-hoc Wireless Networks

Telcordia Contact:

Dennis Mok, Ph.D.

Principal Systems Engineer

Telcordia Technologies Inc.

dmok@telcordia.com

(703) 875-2286

October 27, 2011

Presented to:

Michael Maszczak

Senior Systems Engineer

Telcordia Technologies Inc.

mmaszcza@telcordia.com

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The Hybrid Concept

Server

Hardware

Physical Routers Physical

Transports

Modeling

Software

Server

Models

SITL

Router

Models

Transport

Models

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Realism Performance

Scalability Cost

Desired Prototyping/Testing Characteristics

Physical - High

Modeling - Low

Hybrid - Medium

Physical - High

Modeling - Low

Hybrid - Medium

Physical - Low

Modeling - High

Hybrid - Medium

Physical - High

Modeling - Low

Hybrid - Medium

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SITL (System-In-The-Loop)

• SITL is an add-on module for OPNET's modeling and simulation products

• SITL provides a simple "plug and play" interface that connects live applications or network devices, such as servers and routers, to OPNET simulations

• Real Sim Scenario: provides a communication path between a simulated network element and a real network element

• Real Sim Real Scenario: provides transparent transport of traffic between real network elements

© 2011 OPNET Technologies, Inc. OPNET is a registered trademark of OPNET Technologies, Inc

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SIM

Real Network Elements talk to

Simulated Network Elements

Protocol interaction between Real

and Simulated network elements

Simulated Network Elements talk to

Simulated Network Elements

Protocol interaction between Simulated

network elements

REAL to SIM Scenario

REAL

SITL

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Real Network Elements talk to

Real Network Elements

Protocol interaction between

Real network elements

Simulated Network Elements talk

to Simulated Network Elements

Protocol interaction between

Simulated network elements

REAL to SIM to REAL Scenario

REAL REAL

SIM SITL SITL

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Physical

Source

Physical

Destination OPNET

Simulation

BS1

AS

PCRF

S-CSCF

HSS

I-CSCF

P-CSCF

Physical IMS Nodes

BS2

MS1

SITL MS2

SITL

SITL

Signaling

Media

Hybrid Modeling and Simulation Platform

REAL SIM

REAL

IP

IMS

Functionalities

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End-to-End Prototyping Framework

AS

PCRF

S-CSCF

HSS

I-CSCF

P-CSCF

OPNET Access Network Models

IMS Lab

IP Lab

IMS Stack

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Example Testbed Hardware Configuration

UE1

P-CSCF1

UE2

PE1

P1

UE3 UE4

PE2

S1 S2

SITL

Host

P2

P-CSCF2

C1

C2

External Interface

AS

PCRF

S-CSCF

HSS

I-CSCF

P-CSCF

Ethernet

Switch2 Ethernet

Switch3

Ethernet

Switch1

Internet

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End-to-End Network Prototyping

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End-to-End Performance Features

BS

• Transport

Queueing

BS

• Management

Queueing

HSS GETS-AS

P-CSCF

I-CSCF S-CSCF

• Server

Processing

• Access Control

Algorithm

Access Modeling • EvDO

• WiMAX

• LTE

• Ad-hoc Mobile

IP v4/v6 Prototyping

• Multi-Domain Transport

• Quality of Service (DiffServ)

IMS Prototyping

• Security

• Call Flows

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S-GW PDN-GW

MME

eNB

IP Network

UE

S1-U

Uu S1-MME

S11

S5

eNB

X2

LTE UE Mobility

LTE Access Performance Features

Ad-hoc UE-UE Direct

Communications

EPC

LTE UE

Access

Schemes

REAL

SIM

Simulation

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Visualization of Prototyped Network

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Network Performance Dashboard

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End-to-End Performance Measurement

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Experience the Performance

Transmitted Video under

Normal Load

Transmitted Video under

Congestion

Transmitted Audio under

Normal Load

Transmitted Audio under Congestion

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Continuously Evolving Hybrid Platform

Prototyping Modeling

Prototyping Modeling

NGN Priority Services Systems Engineering Process Systems Engineering Stages

Design Development Design Deployment Development Definition

Testing

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Q & A