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Competence Center forAdvanced Network Technologies and Systems

http://www.fokus.gmd.de/catshttp://www.fokus.gmd.de

The SIMTO Project

A Framework for a Flexible Simulation Toolset for Future IP Networks

Project Overview and Status

Thomas Luckenbach

Marc Emmelmann

2001-04-05 2

Home Car Satellite

SIMTO

Simulation Tools Simulation Models Simulation Results

The SIMTO Idea

2001-04-05 3

At GMD FOKUS side SIMTO has established:

• research contract with Technical University of Berlin(01.04.00 - 31.03.01, 6 month student, simulation tool analysis)

• research contract with CNUCE(01.07.00 - 30.06.01, 12 month scientist, TCP/IP via LEO)

• research stay of GMD researcher in Pisa(6/00, 2 weeks., introduction into ATM-Sat, agreement on workplan)

• research stay of CNUCE researcher in Berlin(10/00, 1 week, introduction into demonstrator, presentation of results)

Continuation of SIMTO depends on fundingContinuation of SIMTO depends on funding

Knowledge Exchange

2001-04-05 4

Work Items & Topics

Network Environment & Parameters

Evaluation of Simulation Tools

Review of Project Goals

Simulation Results

2001-04-05 5

Network Environment & Parameters

Defined by GMD/Fokus Based on LEO Satellite project at GMD Includes definition of:

Satellite Orbit Bit-Rates Bit Error Rates Up- & Downlink Delay Intra-Satellite Delay

2001-04-05 6

Satellite Orbit,Bit- & Error- Rates

Feeder Up & Downlink:32.768 Mbit/s

BER above MAC 2*10e-8

ISL: 7 - 10 Gbit/s

BERs neglected

Service Downlink:32.768 Mbit/s

BER above MAC 2*10e-8

Service Uplink (fixed):2.048 Mbit/s

BER above MAC 2*10e-8

Service Uplink (portable):384 kbit/s

BER above MAC 2*10e-8

LEO Satellite1350 km orbit

45deg inclination

Service Provider

Portable Terminal

Mobil Terminal

2001-04-05 7

Propagation Delays

Up- & Downlink Delay function of slant range analytically gained verified with STK

Intra-Satellite Delay “routes in the sky” still open simulation based forward & backward, “left” &

“right” neighbor

2001-04-05 8

Evaluation of Simulation Tools

Tool Evaluator Comment

RESQ CNR/CNUCE used

Opnet GMD/Fokus used

ns GMD/Fokus further usage underdiscussion

stk GMD/Fokus auxiliary tool,used

2001-04-05 9

Review of Project Goals

“Real Life” Verification of Simulation Results Test-Beds Real Networks

Provision of Demonstration Environment Network independent TCP Analyzer User Application Platform

2001-04-05 10

Simulation Results & Demonstrator Set-Up

Will be presented by:

Dr. Enrico Gregori& Cristina Foderi

CNR / CNUCE

2001-04-05 11

World Wide Web

http://www.fokus.gmd.de Information about FOKUS

http://www.fokus.gmd.de/cats Information about the Competence Center CATS

http://www.fokus.gmd.de/cats/projects Information about the project

http://www.fokus.gmd.de/cats/publ Download this presentation Other CATS publications