Transcript presentation

Freemote:
A Wireless Sensor Networks Emulation System
MINEMA Workshop – Lappeenranta – Finland – 21.08.2008
Raphael Kummer
[email protected]
Timothée Maret
[email protected]
Peter Kropf
[email protected]
Jean-Frédéric Wagen
[email protected]
Agenda
◆ Context
◆ Freemote architecture
◆ How to work with Freemote
◆ Future improvements
◆ Conclusion
Wireless Sensor Networks
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Highly specialized operating systems adapted to limited hardware resource
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TinyOs
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Contiki
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…
Complex, hard to learn programming languages
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◆
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NesC
Application specific virtual machine
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Maté
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SwissQM
Freemote:
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Lightweight Java-based tool for Java-based motes
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Focus on behavior credibility
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Mix real and emulated nodes
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Fully configurable
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Compatible with standards
Freemote: idea
Freemote: Architecture
Freemote: Architecture
Develop for Freemote
Run your Application
Watch your Application
Future development
◆ Integrate emerging Java Motes like Sentilla Point
◆ Integrate TinyOS 2
◆ Linking Freemote with TOSSIM
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Running experiments including Java and TinyOS nodes (TinyOS 1 & 2)
◆ Link topology manager with InCov (Echenard and Wagen 2006)
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Reproduce IEEE 802.15 signal propagation in indoor environments
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Emulate more realistically WSNs
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Experiment network
◆ Introduce realistic energy consumption measurements
◆ Introduce CPU measurements
◆ Provide live configuration and statistical tools
Preliminary experiment
◆ « ping » request using TinyOS 1 (AODV ad-hoc routing)
InCov : Coverage prediction for realistic radio simulation
ISM ZigBee 2.4GHz band
InCov prediction could replace the unrealistic
circular coverage usually used in simulations
[ http://home.hefr.ch/wagen/InCov/ ]
Validation InCov
RSSI Up
RSSI Down
RSSI Down
RSSI Up
Both Received Signal Strengh Indicator RSSI estimated on the up- and
down-link (or no coverage) are measured and compared to InCov
prediction (shown previously).
Conclusion
◆ 10’000 nodes emulation system
◆ Java Mote emulation system
◆ Same code runs on emulated nodes and JMotes (EIA-FR)
◆ ZigBee compatible (e.g., Berkeley motes)
◆ GUI
◆ Available at: http://www.assembla.com/wiki/show/freemote/
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Free code source
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Run directly from website (Java Web Start)
◆ Basic system
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Many possible improvements (TinyOS 1 not supported anymore => TYMO
routing, Java on Sentilla motes, InCov validation in various building, … )
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Open to propositions: contact authors
Thanks to Fabien Le Saoût & Pierre Plaçais for their work during their 3 months stay at EIA-FR
Thank you!
MINEMA Workshop – Lappeenranta – Finland – 21.08.2008
http://www.assembla.com/wiki/show/freemote