complexperiments

1. “Henri Poincaré” Group of Complex Systems University of Havana http://www.complexperiments.net Challenged Gateway for WSN Focus on limited infrastructuredeployments http://www.wsnblog.com C. Noda 1, C. Pérez 1, M. Zennaro 2 and B. Pehrson 3 "Henri Poincaré: Group of Complex Systems (1) Physics Faculty, University of Havana http://www.complexperiments.net Aeronomy and RadioPropagation Laboratory (2) ICTP, Trieste http://wireless.ictp.trieste.it Royal Institute of Technology KTH, Sweden (3) Workshop on Wireless Computing and Sensor Networks Havana. May, 2007

2. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments • WSN meets ICT4D main technological requirements • Autonomous connectivity, low-cost equipment, appropriate user • interfaces and power resilience • We believe WSN technologies has much to DC • A barrier many researchers face when attempting to deploy • a WSN: • lack of easy-to-use, afordable, flexible tools for the study of • a scientific phenomena in real, non-laboratory settings. • Our goal is to build an experimental platform to help non-technical researchers deploy and use a wireless sensor network in Developing Countries http://www.wsn4d.org

3. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments WSN Applications CitySense ZebraNet Duck Island Military Survileance Shooter Localization Volcano Monitoring http://www.wsnblog.com

4. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments Two main Assumptions in WSN research today: There are POWER and CONNECTIVITY Gateways Xbow Stargate - XScale Network Interface and Single Board Computer 400MHz, Linux Single Board Computer Archrock But commonly the gateway is ANotebook ~ $800.00 USD http://www.wsn4d.org

5. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments Current Research Work Adapted from: J. Beutel, Swiss Federal Institute of Technology Zurich

6. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments • In order to advance in rural WSN applications • A challenged Gateway is in need • Very low power and limited connectivity both in time and bandwith • Thus our Gateway Desing should focus on: • Price • I/O • Speed • Memory • Java performance • Power consumption Shall we use SNAP? Or maybe we should consider other platforms? Maybe an embedded linux? http://www.wsn4d.org

7. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments The Linksys NSLU Pros: 133 MHz, ARM-processor 32MB RAM 8MB flash 10/100 Ethernet port two USB 2.0 ports < 1 Watt power circa 150 USD and there is a hack: http://www.nslu2-linux.org/ Cons: proprietary design scarce documentation Tmote Connect is based on it http://www.moteiv.com http://www.wsn4d.org

8. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments http://www.wsn4d.org Tmote Sky Moteiv.com ~ 60 Eu JSimm SNAP Imsys.se 122 Eu TILT Systronix

9. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments We need something robust enough to be deployed: in the Jungle In a River in Desert Low Cost so we can do DC apps Yet flexible and indeed simple to use The KISS principle (Keep It Simple, Stupid) If S stands for simplicity S = x + y + z x is good research and prototyping y is play z is reduction of unnecessary elements

10. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments http://www.wsn4d.org

11. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments

12. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments • power aware • sleeping extends • battery life • store and forward

13. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments Goals: Come up with a sound and robust hardware design based on an open developement platform backed by a supporting community And we contribute with open source software... Soo cool! Right? To be considered: Delay Tolerant Netwoking (DTN)

14. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments Final Design SNAP + 512 MB (Flash Storage) WRT54GL IP55 Enclosure 12v 7Ah Battery

15. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments • Maybe we are WRONG :-/ • Sofware Development nightmare!! • porting TinyOS java tools to J2ME • code nesC and Java for each app • shall we be able to program nodes in the field remotely? Are we missing something ?? middleware for sensor networks... what are other people doing? Do we want an ad hoc or a general solution? Well we have company.. SeaMoster The South East Alaska MOnitoring Network for Science, Telecommunications, Education, and Research InvolvesNOAA, NASA and Microsoft Let’s bactrack a little bit...

16. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments Tenet http://tenet.usc.edu/ [O. Gnawali, B. Greenstei, K. Jang, A. Joki, et al, ] SENSYS, 2006. Boulder, CO. The Tenet architecture is motivated by the observation that future largescale sensor network deployments will be tiered, consisting of motes in the lower tier and masters, relatively unconstrained 32-bit platform nodes, in the upper tier. • Masters provide increased network capacity • constrains multinode fusion to the master tier • motes process locally-generated sensor data • simplies application development • allows mote-tier software to be reused • currently implemented for ARM and Fedora core

17. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments And then we discovered the Gumstix! Design Flexibility, Low Production Costs, Rapid Time to Market 128 MB RAM, 32MB Flash 400MHz CPU with 100MHz bus 100% CPU usage requires 0.22A@3V And it runs linux.... And there is super duper wiki with docs ...now we can explore DTN !!

18. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments • And now comes EasyWay... • Aimed at decomplicating fast deployments for Scientific Applications • Based on Django: a high level Python Web framework • Been coded in 3 blocks: • Motes reprogramming and network configuration • Tasklets settings, data collection and storage • Data visualization • MySQL • Matplotlib • GraphViz Submitted to: NSDR 2007 with ACM SIGCOMM 2007 Kyoto Japan, 27th - 31st August, 2007

19. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments Supporters: (been currently lobbied) Regione Friuli Venezia Giulia http://www.regione.fvg.it/ (Future apps in Malawi) IRDC, Canada Adapted Consulting, Inc http://adaptedconsulting.com SIDA, Sweden (through www.sics.se)

20. “Henri Poincaré” Group of Complex Systems University of Havana Challenged Gateway for WSN Focus on limited infrastructuredeployments THANK YOU claro.noda (at) gmail.com Feedback is Welcome!