COST 272 – Surrey – Toulouse – 11/12 October 2001

Dr. Haitham CruickshankUniversity of Surrey (UK)

COST 272 – Surrey – Toulouse – 11/12 October 2001

❏ BISANTE project overview

❏ GEO satellite modelling and results

❏ LEO satellite modelling and results

❏ Conclusions

COST 272 – Surrey – Toulouse – 11/12 October 2001

❏ The Broadband Integrated Satellite Network Traffic Evaluation (BISANTE) is a European ESPRIT project

❏ The objective is to develop a simulation methodology and framework with a prototype workbench

❏ This paper focuses on the network modelling aspects of of BISANTE

COST 272 – Surrey – Toulouse – 11/12 October 2001

Integration of BISANTE Traffic ModelsIntegration of BISANTE Traffic Models

OPNET Traffic Modelo Interface TPALo Process Model 3o Library 0o External Files 4

BISANTE Traffic Modelo Interface TPAL o Process Model 1o Library 1o External Files 0

COST 272 – Surrey – Toulouse – 11/12 October 2001

Packet Capture

10M Ethernet Hub

Client

Cisco 2514

GEO Satellite (ACTS)

Server

10M Ethernet HubCisco 2514

768Kbps 768Kbps

GEO Satellite Network – NASA’s ACTSGEO Satellite Network – NASA’s ACTS

COST 272 – Surrey – Toulouse – 11/12 October 2001

GEO Satellite SubnetworkGEO Satellite Subnetwork

COST 272 – Surrey – Toulouse – 11/12 October 2001

GEO Satellite Model ValidationGEO Satellite Model Validation

FTP - Measurement vs. Simulation

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0 1000 2000 3000 4000 5000 6000

File Size (KBytes)

Th

rou

gh

pu

t (K

Byt

es)

NASA

SURREY

Compare with NASA’s Measurements

COST 272 – Surrey – Toulouse – 11/12 October 2001

HTTP over GEO SatellitesHTTP over GEO Satellites

COST 272 – Surrey – Toulouse – 11/12 October 2001

IRIDIUMIRIDIUM TELEDESICTELEDESIC

COST 272 – Surrey – Toulouse – 11/12 October 2001

COST 272 – Surrey – Toulouse – 11/12 October 2001

COST 272 – Surrey – Toulouse – 11/12 October 2001

LEO Satellite Model ValidationLEO Satellite Model Validation

Compare with Published Simulation Results

COST 272 – Surrey – Toulouse – 11/12 October 2001

LEO Satellite Model ValidationLEO Satellite Model Validation

Further Validated by STK

COST 272 – Surrey – Toulouse – 11/12 October 2001

Integration of Satellite & Terrestrial ModelsIntegration of Satellite & Terrestrial Models

SIU- Satellite Interface Unit

COST 272 – Surrey – Toulouse – 11/12 October 2001

Statistics from Integrated Network ModelsStatistics from Integrated Network Models

Scenario-1: by Satellites

Scenario-2: by PPP Link

Scenario-3: by LAN

FTP Response Time

Delay Variation of the LEO Satellite Networks

COST 272 – Surrey – Toulouse – 11/12 October 2001

❏ This paper focuses on the networking aspect, where satellite network modelling includes satellite constellations, network modules and protocol architectures

❏ The simulation validation scenarios and results are presented.

❏ The results produced at the network level show the performance of FTP and HTTP over GEO and LEO satellite constellations

❏ simulation scenarios can be useful for network dimensioning and traffic management.