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My Internship at EPFL inMy Internship at EPFL inLausanne, SwitzerlandLausanne, Switzerland

Doug LundquistDoug Lundquist

University of Illinois at ChicagoUniversity of Illinois at Chicago

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EPFLEPFL

École Polytechnique Fédérale de École Polytechnique Fédérale de LausanneLausanne

About 6000 students in seven About 6000 students in seven schools, with most study areas in schools, with most study areas in technology-driven fieldstechnology-driven fields

One of the world’s top universities in One of the world’s top universities in computer science, engineering, and computer science, engineering, and communicationscommunications

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Laboratory for Computer Laboratory for Computer Communications and Communications and

ApplicationsApplications Perform basic and applied research Perform basic and applied research

in networking and related fieldsin networking and related fields Provide undergraduate and graduate Provide undergraduate and graduate

teaching of networking and related teaching of networking and related disciplinesdisciplines

Perform technology transfer to Perform technology transfer to established and start-up companiesestablished and start-up companies

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Traffic and Network Traffic and Network Simulation Environment Simulation Environment

(TraNS)(TraNS) Located at Located at http://trans.epfl.ch/ Integrates traffic and network simulators Integrates traffic and network simulators

to generate realistic VANET simulationsto generate realistic VANET simulations Combines SUMO (Simulation of Urban Combines SUMO (Simulation of Urban

Mobility) and either JiST/SWANS or NS-2, Mobility) and either JiST/SWANS or NS-2, allowing vehicles to respond to allowing vehicles to respond to information during the course of information during the course of simulationssimulations

Can use real maps (Can use real maps (e.g.e.g., from US Census), from US Census)

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TraNS issuesTraNS issues

Designed to model short trips; vehicles Designed to model short trips; vehicles appear at map edges, travel to some appear at map edges, travel to some point, then exit the networkpoint, then exit the network

Interactivity difficult with JiST/SWANSInteractivity difficult with JiST/SWANS Some bugs (quite possibly from Some bugs (quite possibly from

SUMO), leading to vehicle “teleports” SUMO), leading to vehicle “teleports” or moving outside mapsor moving outside maps

Map granularity not suitable for dense Map granularity not suitable for dense networksnetworks

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TraNS v2.0TraNS v2.0

New featuresNew features Allows designating specific paths or chains Allows designating specific paths or chains

of pathsof paths Allows construction of maps by handAllows construction of maps by hand

Old problemsOld problems Occasional teleport bugs remainOccasional teleport bugs remain Interactivity still problematic with Interactivity still problematic with

JiST/SWANSJiST/SWANS Demo: Demo:

http://wiki.epfl.ch/trans/documents/trans.htm

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Work AccomplishedWork Accomplished

Coded methods for converting TraNS Coded methods for converting TraNS output (and pre-generated mobility data) output (and pre-generated mobility data) to a compact format for JiST/SWANSto a compact format for JiST/SWANS

Provided suggestions which were Provided suggestions which were incorporated into latest version of TraNSincorporated into latest version of TraNS

Wrote a paper for IEEE APSCC (Taiwan, Wrote a paper for IEEE APSCC (Taiwan, December 2008) using TraNS to generate December 2008) using TraNS to generate vehicle flows on hand-drawn mapsvehicle flows on hand-drawn maps

Continuing research dialogueContinuing research dialogue

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LausanneLausanne

Pros:Pros: Clean, safeClean, safe Many studentsMany students Most people speak EnglishMost people speak English

Cons:Cons: ExpensiveExpensive Difficult to find housingDifficult to find housing

Other: Many small lizards, no Other: Many small lizards, no squirrelssquirrels

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RecreationRecreation

Close to France, Germany, ItalyClose to France, Germany, Italy Switzerland has mountainsSwitzerland has mountains

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