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<title>, <location><lecturer>
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