Community Wireless Networks <ul><li>Dave Phelan </li></ul><ul><li>http://www.piertopier.net </li></ul><ul><li>[email_addre...
Agenda <ul><li>Defining Wireless LANs </li></ul><ul><ul><li>What they are & what they are not </li></ul></ul><ul><li>Techn...
Definitions <ul><li>WLAN Wireless Local Area Network </li></ul><ul><li>WECA Wireless Ethernet Compatibility Alliance </li>...
Non-definitions <ul><li>Bluetooth </li></ul><ul><ul><li>Personal Area Network (PAN) </li></ul></ul><ul><ul><li>Cable repla...
<ul><li>IEEE 802.11 2 Mbps, DSS or FHSS - original spec </li></ul><ul><li>2.4 GHz ISM band  </li></ul><ul><li>IEEE 802.11b...
Range <ul><li>2.4 GHz is limited to 100mW output so range in limited. Card-to-card comms can probably do 200-300m in free ...
Technology <ul><li>Infrastructure mode </li></ul><ul><ul><li>Requires an Access Point </li></ul></ul><ul><ul><li>Equivalen...
Regulation <ul><li>802.11b & 802.11g WLANs operate over 2.4 GHz radio frequencies </li></ul><ul><li>This is the ISM (Indus...
Regulation <ul><li>In the UK (before 31st July 2002) the ISM band was not “unlicensed” but rather was covered under a clas...
What changed? <ul><li>Announcement from the DTI on 10th June 2002, following a consultation exercise </li></ul><ul><li>Per...
Community Wireless <ul><li>So, you could not offer a commercial service, so why not do it for free? </li></ul><ul><li>Cons...
US Pioneered <ul><li>BAWUG </li></ul><ul><ul><li>Bay Area Wireless Users Group </li></ul></ul><ul><li>Seattle Wireless </l...
Freenetworks <ul><li>Arwain </li></ul><ul><li>Leeds & Area Consume </li></ul><ul><li>free2air.org </li></ul><ul><li>freene...
Not all free… <ul><li>“Wireless Broadband” </li></ul><ul><li>Essex Broadband </li></ul><ul><li>Digital Dales </li></ul><ul...
Devil’s Dyke <ul><li>Objective </li></ul><ul><ul><li>Provide wireless broadband internet access to specific areas of West ...
Devil’s Dyke http://www.devilsdyke.net/coverage.htm
Feeed <ul><li>Sussex based group </li></ul><ul><li>Not for profit club </li></ul><ul><li>Subscription-based </li></ul><ul>...
DIY? <ul><li>Expensive hardware </li></ul><ul><li>Expensive services </li></ul><ul><li>No coverage </li></ul><ul><li>Broad...
Infrastructure <ul><li>Linux on old laptops </li></ul><ul><li>2nd hand WLAN cards </li></ul><ul><li>Host AP on Prism/2 car...
Mmm, Homebrew <ul><li>Pringles cans </li></ul><ul><li>Coffee can Waveguide (Cantenna) </li></ul><ul><li>Whiskey tin </li><...
Pringles Cans <ul><li>Famous… </li></ul><ul><li>Complex to build </li></ul><ul><li>But they work! </li></ul>Source: BBC ht...
Cantenna <ul><li>Coffee Can Waveguide  </li></ul><ul><li>Really easy to make </li></ul><ul><li>Directional </li></ul><ul><...
Whiskey Tin <ul><li>Similar to the Cantenna, but more gain </li></ul><ul><li>Directional </li></ul><ul><li>Equally easy to...
Omnidirectionals <ul><li>Quarter-wave Omni </li></ul><ul><li>http://flakey.info/antenna/omni/quarter/ </li></ul><ul><li>Ve...
Satellite Dishes… <ul><li>Biquad Antenna </li></ul><ul><li>Feeds into satellite dish </li></ul><ul><li>http://trevormarsha...
Opensource tools <ul><li>Kismet </li></ul><ul><li>NoCatAuth </li></ul><ul><li>NoCatSplash </li></ul><ul><li>Linux/*BSD dri...
Netstumber
consume-brighton <ul><li>http://www.radiolink.net/consume-brighton </li></ul><ul><li>Original intent </li></ul><ul><li>Dis...
Piertopier.net <ul><li>Objectives </li></ul><ul><ul><li>Provide WLAN to the beach between the Piers </li></ul></ul><ul><ul...
Piertopier.net <ul><li>Longevity </li></ul><ul><ul><li>As long as it is used </li></ul></ul><ul><ul><li>As long as sites a...
Total Users <ul><li>Node 1 (Riptide) 228  </li></ul><ul><li>Node 2 (Sailing Club) 663  </li></ul><ul><li>Node 3 (Fishing M...
History <ul><li>February 2003 </li></ul><ul><ul><li>Initial email, followed by pub meet </li></ul></ul><ul><ul><li>Bounded...
History <ul><li>February 2004 </li></ul><ul><ul><li>Node 3  </li></ul></ul><ul><li>March 2004 </li></ul><ul><ul><li>Node 4...
Technology <ul><li>MeshAP </li></ul><ul><li>Mini-ITX motherboards </li></ul><ul><li>Netgear MA311 802.11b cards </li></ul>...
MeshAP <ul><li>Locustworld </li></ul><ul><li>Meshbox/Meshbook hardware </li></ul><ul><li>MeshAP code – based on Slackware ...
Hacks <ul><li>Customised Captive Portal </li></ul><ul><ul><li>Piertopier.net look and feel </li></ul></ul><ul><ul><li>Rota...
WIANA
Initial Sponsors <ul><li>Dataline Software </li></ul><ul><ul><li>Contributed PierToPier.net domain name,  </li></ul></ul><...
Further Sponsors <ul><li>Amplicon Liveline </li></ul><ul><ul><li>Contributed the Moxa NPort 4511 Programmable Communicatio...
Further Sponsors  <ul><li>Face Media Group </li></ul><ul><ul><li>Kindly produced 5000 full colour A6 flyers </li></ul></ul...
Nodes <ul><li>Node 1 </li></ul><ul><ul><li>Riptide </li></ul></ul><ul><ul><li>Mini-ITX </li></ul></ul><ul><li>Node 2 </li>...
Nodes <ul><li>Node 5 </li></ul><ul><ul><li>Granville  Hotel </li></ul></ul><ul><ul><li>Mini-ITX </li></ul></ul><ul><li>Nod...
Webcams
Windsensor
Network Map
Network Details
Need Assistance <ul><li>Sponsorship </li></ul><ul><ul><li>Money </li></ul></ul><ul><ul><li>Hardware </li></ul></ul><ul><ul...
What's Next? <ul><li>Applaud Looseconnection </li></ul><ul><ul><li>Grand Central </li></ul></ul><ul><ul><li>Black Lion </l...
What’s Next? <ul><li>Mesh networks </li></ul><ul><ul><li>Do they work? </li></ul></ul><ul><ul><li>Will they scale? </li></...
What’s Next? <ul><li>Innovative uses of the network(s)… </li></ul><ul><ul><li>Community </li></ul></ul><ul><ul><li>Locatio...
Questions?
Links <ul><li>http://www.weca.net/OpenSection/index.asp </li></ul><ul><li>http://www.wi-fizone.org/ </li></ul><ul><li>http...
Links <ul><li>http://www.consume.net/ </li></ul><ul><li>http://www.kentwireless.net/ </li></ul><ul><li>http://www.arwain.n...
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Community Wireless Networks

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A talk to the British Computer Society about community wireless networking, piertopier.net, and homebrew kit.

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Community Wireless Networks

  1. 1. Community Wireless Networks <ul><li>Dave Phelan </li></ul><ul><li>http://www.piertopier.net </li></ul><ul><li>[email_address] </li></ul>
  2. 2. Agenda <ul><li>Defining Wireless LANs </li></ul><ul><ul><li>What they are & what they are not </li></ul></ul><ul><li>Technology Overview </li></ul><ul><ul><li>Standards & Overview of IEEE 802.11b (Wifi) </li></ul></ul><ul><li>Community Wireless </li></ul><ul><ul><li>Why? </li></ul></ul><ul><ul><li>How? </li></ul></ul><ul><ul><li>Who? </li></ul></ul><ul><li>Piertopier.net </li></ul><ul><ul><li>History, Philosophy, Where, and What Next? </li></ul></ul><ul><li>The future? </li></ul>
  3. 3. Definitions <ul><li>WLAN Wireless Local Area Network </li></ul><ul><li>WECA Wireless Ethernet Compatibility Alliance </li></ul><ul><li>WiFi “Wireless Fidelity” WECA brand signifying IEEE 802.11b interoperability testing has been passed. </li></ul>
  4. 4. Non-definitions <ul><li>Bluetooth </li></ul><ul><ul><li>Personal Area Network (PAN) </li></ul></ul><ul><ul><li>Cable replacement </li></ul></ul><ul><li>Wide Area Network </li></ul><ul><ul><li>EU power restrictions </li></ul></ul><ul><ul><li>55km links in US </li></ul></ul><ul><ul><li>Maximum legal reach is a couple of miles in UK </li></ul></ul><ul><li>GSM </li></ul><ul><li>GPRS </li></ul><ul><li>3G (UMTS) </li></ul>
  5. 5. <ul><li>IEEE 802.11 2 Mbps, DSS or FHSS - original spec </li></ul><ul><li>2.4 GHz ISM band </li></ul><ul><li>IEEE 802.11b 11/5.5/2 Mbps, DSS – interop with 802.11/DSS at 2 Mbps </li></ul><ul><li>2.4 GHz ISM band </li></ul><ul><li>IEEE 802.11a 6-54 Mbps, OFDM </li></ul><ul><li>5 GHZ </li></ul><ul><li>IEEE 802.11g 54 Mbps </li></ul><ul><li>2.4 GHz ISM band </li></ul><ul><li>IEEE 802.11h 54 Mbps , OFDM with DCS/TPC. </li></ul><ul><li>5 GHZ </li></ul><ul><li>HiperLAN 1 20 Mbps - European Standard </li></ul><ul><li>5 GHZ </li></ul><ul><li>HiperLAN 2 54 Mbps - European Standard </li></ul><ul><li>5 GHZ </li></ul>Standards
  6. 6. Range <ul><li>2.4 GHz is limited to 100mW output so range in limited. Card-to-card comms can probably do 200-300m in free space, less indoors. Suitable antennae can get you a few km without breaking the law. In the US 802.11b can reach >50km. 2.4 GHz is the frequency that baby monitors and microwaves emit at, so is prone to interference. </li></ul><ul><li>Radio propagation at 5 GHz was expected to be lower for the same power output, but it is not clear if the emission regs are similar. Expect ranges to be about the same as for 2.4 GHz, but with better throughput at range. Used for satellite comms and military so more closely regulated than the ISM band. </li></ul>
  7. 7. Technology <ul><li>Infrastructure mode </li></ul><ul><ul><li>Requires an Access Point </li></ul></ul><ul><ul><li>Equivalent to a Hub in wired networks </li></ul></ul><ul><li>Ad-Hoc (peer-to-peer) mode </li></ul><ul><ul><li>All nodes must see each other </li></ul></ul><ul><ul><li>Manual config </li></ul></ul><ul><ul><li>Equivalent to a back-to-back cable in wired networks </li></ul></ul><ul><li>CSMA/CA </li></ul><ul><ul><li>Carrier Sense Multiple Access with Collision Avoidance </li></ul></ul>
  8. 8. Regulation <ul><li>802.11b & 802.11g WLANs operate over 2.4 GHz radio frequencies </li></ul><ul><li>This is the ISM (Industrial, Scientific, Medical) band </li></ul><ul><li>Available as “unlicensed” in most of the world, ie free to use for anyone </li></ul><ul><li>In the UK the position has been more complex </li></ul>
  9. 9. Regulation <ul><li>In the UK (before 31st July 2002) the ISM band was not “unlicensed” but rather was covered under a class license allowing free use without applying for a license from the Radio Authority </li></ul><ul><li>EXCEPT where the operator was using the band to provide a telecommunications service 'by way of business to another person' . In which case, it was no-go… </li></ul><ul><li>This even ruled out the coffee-shop model, as even giving free wireless internet access in exchange for buying a cup of coffee was strictly speaking a BWOB transaction! </li></ul>
  10. 10. What changed? <ul><li>Announcement from the DTI on 10th June 2002, following a consultation exercise </li></ul><ul><li>Permits the operation of commercial telecommunication services in the ISM band without the need for a Wireless Telegraphy Act license. </li></ul><ul><li>Still need to be licensed under the Telecommunications Act though </li></ul>
  11. 11. Community Wireless <ul><li>So, you could not offer a commercial service, so why not do it for free? </li></ul><ul><li>Consume.net </li></ul><ul><li>Register of open access points </li></ul><ul><li>Greater ambitions to route around the wired net of telcos & ISPs </li></ul><ul><li>Kickstarted the idea of free wireless in the UK </li></ul>
  12. 12. US Pioneered <ul><li>BAWUG </li></ul><ul><ul><li>Bay Area Wireless Users Group </li></ul></ul><ul><li>Seattle Wireless </li></ul><ul><ul><li>Seattle </li></ul></ul><ul><li>Personal Telco </li></ul><ul><ul><li>Oregon </li></ul></ul><ul><li>NYC Wireless </li></ul><ul><ul><li>New York </li></ul></ul>
  13. 13. Freenetworks <ul><li>Arwain </li></ul><ul><li>Leeds & Area Consume </li></ul><ul><li>free2air.org </li></ul><ul><li>freenetworks.org </li></ul><ul><li>Luton and Dunstable Community Network Club </li></ul><ul><li>And many more… </li></ul><ul><li>See http://www.wlan.org.uk/operational_wlan_sites.html </li></ul>
  14. 14. Not all free… <ul><li>“Wireless Broadband” </li></ul><ul><li>Essex Broadband </li></ul><ul><li>Digital Dales </li></ul><ul><li>EdenFaster </li></ul><ul><li>Digital Parish </li></ul><ul><li>But – BT’s enhanced broadband roll-out is hitting these initiatives </li></ul>
  15. 15. Devil’s Dyke <ul><li>Objective </li></ul><ul><ul><li>Provide wireless broadband internet access to specific areas of West Sussex </li></ul></ul><ul><li>Reach </li></ul><ul><ul><li>Tested to 14+ km </li></ul></ul><ul><li>Environment </li></ul><ul><ul><li>Radio kit is located in the weather proof housing at the rear of the antenna (right) </li></ul></ul><ul><li>Community project run by enthusiasts </li></ul><ul><li>Non-profit </li></ul>http://www.btinternet.com/~ddwlanproject/photos.html
  16. 16. Devil’s Dyke http://www.devilsdyke.net/coverage.htm
  17. 17. Feeed <ul><li>Sussex based group </li></ul><ul><li>Not for profit club </li></ul><ul><li>Subscription-based </li></ul><ul><li>Hastings </li></ul><ul><li>St. Leonards </li></ul><ul><li>Bexhill </li></ul><ul><li>Eastbourne </li></ul><ul><li>Reading </li></ul><ul><li>Northampton </li></ul><ul><li>Rayleigh, Essex. </li></ul>http://www.feeed.net
  18. 18. DIY? <ul><li>Expensive hardware </li></ul><ul><li>Expensive services </li></ul><ul><li>No coverage </li></ul><ul><li>Broadband roll-out </li></ul><ul><li>Grassroots </li></ul><ul><li>Fun! </li></ul>
  19. 19. Infrastructure <ul><li>Linux on old laptops </li></ul><ul><li>2nd hand WLAN cards </li></ul><ul><li>Host AP on Prism/2 cards </li></ul><ul><li>homebrew antennae </li></ul>The NoCat Night Light http://www.oreillynet.com/pub/h/352
  20. 20. Mmm, Homebrew <ul><li>Pringles cans </li></ul><ul><li>Coffee can Waveguide (Cantenna) </li></ul><ul><li>Whiskey tin </li></ul><ul><li>Omnis </li></ul><ul><li>Sector </li></ul><ul><li>Caveat: </li></ul><ul><li>There are regulations about both maximum output power in the 2.4GHz band, and about the testing process radio transmission equipment must go through. Homebrew antennae may breach these regulations. </li></ul>
  21. 21. Pringles Cans <ul><li>Famous… </li></ul><ul><li>Complex to build </li></ul><ul><li>But they work! </li></ul>Source: BBC http://www.netscum.com/~clapp/wireless.html Source: Arwain
  22. 22. Cantenna <ul><li>Coffee Can Waveguide </li></ul><ul><li>Really easy to make </li></ul><ul><li>Directional </li></ul><ul><li>Element at 0.25 wavelengths from can base </li></ul><ul><li>Element is N-connector & copper wire </li></ul>http://www.turnpoint.net/wireless/cantennahowto.html
  23. 23. Whiskey Tin <ul><li>Similar to the Cantenna, but more gain </li></ul><ul><li>Directional </li></ul><ul><li>Equally easy to make </li></ul><ul><li>Retain whiskey for later use </li></ul>http://flakey.info/antenna/waveguide/
  24. 24. Omnidirectionals <ul><li>Quarter-wave Omni </li></ul><ul><li>http://flakey.info/antenna/omni/quarter/ </li></ul><ul><li>Vertical Collinear Omni </li></ul><ul><li>http://www.tux.org/%7Ebball/antenna/ </li></ul>
  25. 25. Satellite Dishes… <ul><li>Biquad Antenna </li></ul><ul><li>Feeds into satellite dish </li></ul><ul><li>http://trevormarshall.com/biquad.htm </li></ul><ul><li>http://martybugs.net/wireless/biquad/ </li></ul><ul><li>Using an Airport and a cantenna as a dish feed </li></ul><ul><li>http://www.wwc.edu/~frohro/Airport/Primestar/Primestar.html </li></ul>
  26. 26. Opensource tools <ul><li>Kismet </li></ul><ul><li>NoCatAuth </li></ul><ul><li>NoCatSplash </li></ul><ul><li>Linux/*BSD drivers </li></ul><ul><li>Host AP </li></ul><ul><li>Hermes AP </li></ul><ul><li>Netstumbler </li></ul>
  27. 27. Netstumber
  28. 28. consume-brighton <ul><li>http://www.radiolink.net/consume-brighton </li></ul><ul><li>Original intent </li></ul><ul><li>Distributed nodes </li></ul><ul><li>The dyke project </li></ul><ul><li>Mailing list (defunct) </li></ul><ul><li>Led directly to Piertopier.net </li></ul>
  29. 29. Piertopier.net <ul><li>Objectives </li></ul><ul><ul><li>Provide WLAN to the beach between the Piers </li></ul></ul><ul><ul><li>Test out mesh networking </li></ul></ul><ul><ul><li>Organically grow a network </li></ul></ul><ul><ul><li>Do cool stuff </li></ul></ul><ul><li>Tech </li></ul><ul><ul><li>Locustworld Meshbox </li></ul></ul><ul><ul><li>NoCat Auth/Splash </li></ul></ul><ul><ul><li>xDSL links </li></ul></ul><ul><ul><li>Mini ITX PC hardware </li></ul></ul>
  30. 30. Piertopier.net <ul><li>Longevity </li></ul><ul><ul><li>As long as it is used </li></ul></ul><ul><ul><li>As long as sites are willing to host the hardware </li></ul></ul><ul><li>Usage </li></ul><ul><ul><li>1000+ unique users since May 2004 </li></ul></ul><ul><ul><li>Peak of 50 users in one day </li></ul></ul>
  31. 31. Total Users <ul><li>Node 1 (Riptide) 228 </li></ul><ul><li>Node 2 (Sailing Club) 663 </li></ul><ul><li>Node 3 (Fishing Museum) 415 </li></ul><ul><li>Node 4 (Granville Reception) 43 </li></ul><ul><li>Node 5 (Granville Upstairs) 34 </li></ul><ul><li>Node 6 (Audio) 6 </li></ul>
  32. 32. History <ul><li>February 2003 </li></ul><ul><ul><li>Initial email, followed by pub meet </li></ul></ul><ul><ul><li>Bounded problem </li></ul></ul><ul><li>June 2003 </li></ul><ul><ul><li>Node 1 operational </li></ul></ul><ul><li>July 2003 </li></ul><ul><ul><li>Media Frenzy </li></ul></ul><ul><ul><li>BBC online, 6 o’clock news </li></ul></ul><ul><ul><li>Guardian G2 </li></ul></ul><ul><li>October 2004 </li></ul><ul><ul><li>Node 2 </li></ul></ul><ul><ul><li>Wind Sensor </li></ul></ul>
  33. 33. History <ul><li>February 2004 </li></ul><ul><ul><li>Node 3 </li></ul></ul><ul><li>March 2004 </li></ul><ul><ul><li>Node 4 </li></ul></ul><ul><ul><li>Node 5 </li></ul></ul><ul><li>May 2004 </li></ul><ul><ul><li>100+ unique users </li></ul></ul><ul><li>June 2004 </li></ul><ul><ul><li>300+ unique users </li></ul></ul><ul><li>July 2004 </li></ul><ul><ul><li>Node 6 </li></ul></ul><ul><li>September 2004 </li></ul><ul><ul><li>Wifi Surfboard </li></ul></ul>
  34. 34. Technology <ul><li>MeshAP </li></ul><ul><li>Mini-ITX motherboards </li></ul><ul><li>Netgear MA311 802.11b cards </li></ul><ul><li>Omnidirectional antennae </li></ul><ul><li>and… </li></ul><ul><li>PC/104 </li></ul><ul><li>Linksys WRT54G </li></ul>
  35. 35. MeshAP <ul><li>Locustworld </li></ul><ul><li>Meshbox/Meshbook hardware </li></ul><ul><li>MeshAP code – based on Slackware Linux </li></ul><ul><li>NocatSplash captive portal </li></ul><ul><li>Adhoc On-demand Distance Vector routing Algorithm </li></ul><ul><li>Very hackable </li></ul>
  36. 36. Hacks <ul><li>Customised Captive Portal </li></ul><ul><ul><li>Piertopier.net look and feel </li></ul></ul><ul><ul><li>Rotating banners for sponsors (shell script & cron) </li></ul></ul><ul><li>Added pass-through for windsensor </li></ul><ul><li>Shell scripts for user-data collection </li></ul><ul><li>Linux iptables firewall </li></ul><ul><ul><li>Peer-to-peer bandwidth abuse </li></ul></ul><ul><ul><li>Static devices (like webcams) </li></ul></ul>
  37. 37. WIANA
  38. 38. Initial Sponsors <ul><li>Dataline Software </li></ul><ul><ul><li>Contributed PierToPier.net domain name, </li></ul></ul><ul><ul><li>Web hosting and site design </li></ul></ul><ul><ul><li>Custom code for Wind Sensor </li></ul></ul><ul><li>Microexpert </li></ul><ul><ul><li>Contributed the hardware for node 1 </li></ul></ul><ul><li>Moving-Edge.net </li></ul><ul><ul><li>Contributed a high-speed SHDSL line </li></ul></ul><ul><li>Riptide Fitness Centre </li></ul><ul><ul><li>Provided the physical location for node 1 </li></ul></ul>
  39. 39. Further Sponsors <ul><li>Amplicon Liveline </li></ul><ul><ul><li>Contributed the Moxa NPort 4511 Programmable Communication Gateway and the wind sensor. </li></ul></ul><ul><li>The Brighton Centre </li></ul><ul><ul><li>Provided an Axis wireless webcam </li></ul></ul><ul><li>Brighton Fishing Museum </li></ul><ul><ul><li>Provided the location for node 3 </li></ul></ul><ul><li>Brighton Sailing Club </li></ul><ul><ul><li>Contributed the location and hardware for node 2 & first webcam </li></ul></ul><ul><li>Cecil House Hotel </li></ul><ul><ul><li>Contributed the location and hardware for node 5 </li></ul></ul>
  40. 40. Further Sponsors <ul><li>Face Media Group </li></ul><ul><ul><li>Kindly produced 5000 full colour A6 flyers </li></ul></ul><ul><li>The Granville Hotel </li></ul><ul><ul><li>Donated the bandwidth, equipment and location for node 4 </li></ul></ul><ul><li>The Sussex Sign Company </li></ul><ul><ul><li>Contributed the banner which hangs at the Riptide Fitness Centre. </li></ul></ul><ul><li>The Surfing Museum </li></ul><ul><ul><li>Contributed the hardware for node 3 </li></ul></ul><ul><li>Audio </li></ul><ul><ul><li>Donated the equipment and location for node 6 </li></ul></ul>
  41. 41. Nodes <ul><li>Node 1 </li></ul><ul><ul><li>Riptide </li></ul></ul><ul><ul><li>Mini-ITX </li></ul></ul><ul><li>Node 2 </li></ul><ul><ul><li>Sailing Club </li></ul></ul><ul><ul><li>Standard PC </li></ul></ul><ul><li>Node 3 </li></ul><ul><ul><li>Fishing Museum </li></ul></ul><ul><ul><li>Mini-ITX </li></ul></ul><ul><li>Node 4 </li></ul><ul><ul><li>Granville Hotel </li></ul></ul><ul><ul><li>Mini-ITX </li></ul></ul>
  42. 42. Nodes <ul><li>Node 5 </li></ul><ul><ul><li>Granville Hotel </li></ul></ul><ul><ul><li>Mini-ITX </li></ul></ul><ul><li>Node 6 </li></ul><ul><ul><li>Audio </li></ul></ul><ul><ul><li>Mini-ITX </li></ul></ul><ul><li>Node 7 </li></ul><ul><ul><li>Public House (TBC) </li></ul></ul><ul><ul><li>Linksys WRT54G </li></ul></ul>
  43. 43. Webcams
  44. 44. Windsensor
  45. 45. Network Map
  46. 46. Network Details
  47. 47. Need Assistance <ul><li>Sponsorship </li></ul><ul><ul><li>Money </li></ul></ul><ul><ul><li>Hardware </li></ul></ul><ul><ul><li>Bandwidth </li></ul></ul><ul><ul><li>Locations for nodes </li></ul></ul><ul><li>Volunteers </li></ul><ul><ul><li>Enthusiasm & Spare time </li></ul></ul><ul><ul><li>Technical ability optional </li></ul></ul><ul><li>Good ideas to use the network </li></ul><ul><ul><li>Art? Community? </li></ul></ul><ul><ul><li>Geek-outs </li></ul></ul><ul><ul><li>Social software? Location-based apps? </li></ul></ul>
  48. 48. What's Next? <ul><li>Applaud Looseconnection </li></ul><ul><ul><li>Grand Central </li></ul></ul><ul><ul><li>Black Lion </li></ul></ul><ul><ul><li>Bar de la Mer </li></ul></ul><ul><ul><li>Riki Tiks </li></ul></ul><ul><ul><li>Sidewinder </li></ul></ul><ul><ul><li>Pavilion Gardens </li></ul></ul><ul><ul><li>Horse and Hounds </li></ul></ul><ul><li>Expand initiatives </li></ul><ul><ul><li>Out-compete pay hotspots </li></ul></ul><ul><ul><li>You can’t get cheaper than free </li></ul></ul>
  49. 49. What’s Next? <ul><li>Mesh networks </li></ul><ul><ul><li>Do they work? </li></ul></ul><ul><ul><li>Will they scale? </li></ul></ul><ul><ul><li>AODV </li></ul></ul><ul><ul><li>OSPF </li></ul></ul><ul><ul><li>OLSR </li></ul></ul><ul><li>New standards </li></ul><ul><ul><li>802.11g? </li></ul></ul><ul><ul><li>802.11a? </li></ul></ul><ul><ul><li>Proprietary (22 Mbps, 108 Mbps) </li></ul></ul><ul><li>Ultrawideband </li></ul><ul><ul><li>Looks like noise to regulators, radio operators </li></ul></ul>
  50. 50. What’s Next? <ul><li>Innovative uses of the network(s)… </li></ul><ul><ul><li>Community </li></ul></ul><ul><ul><li>Location </li></ul></ul><ul><li>The network vanishes </li></ul><ul><ul><li>Stations </li></ul></ul><ul><ul><li>Trains </li></ul></ul><ul><ul><li>Airports </li></ul></ul><ul><ul><li>Planes </li></ul></ul><ul><ul><li>Offices </li></ul></ul><ul><ul><li>Pubs </li></ul></ul><ul><li>But… </li></ul>
  51. 51. Questions?
  52. 52. Links <ul><li>http://www.weca.net/OpenSection/index.asp </li></ul><ul><li>http://www.wi-fizone.org/ </li></ul><ul><li>http://grouper.ieee.org/groups/802/11/ </li></ul><ul><li>http://standards.ieee.org/getieee802/802.11.html </li></ul><ul><li>http://www.turnpoint.net/wireless/cantennahowto.html </li></ul><ul><li>http://www.oreillynet.com/cs/weblog/view/wlg/448 </li></ul><ul><li>http://www.saunalahti.fi/elepal/antenna2.html </li></ul><ul><li>http://www.netscum.com/~clapp/wireless.html </li></ul>
  53. 53. Links <ul><li>http://www.consume.net/ </li></ul><ul><li>http://www.kentwireless.net/ </li></ul><ul><li>http://www.arwain.net/arwain.htm </li></ul><ul><li>http://www.wlan.freeuk.com/ </li></ul><ul><li>http://www.wlan.org.uk/ </li></ul><ul><li>http://www.free2air.org </li></ul><ul><li>http://www.bawug.org/ </li></ul><ul><li>http://www.seattlewireless.net/ </li></ul><ul><li>http://www.nocat.net/ </li></ul><ul><li>http://www.freenetworks.org/ </li></ul><ul><li>http://www.locustworld.com/ </li></ul>

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