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Cambridge's Streetlamp-Powered Wireless Network

Serpentegena writes "A joint research project by scientists at Harvard University and BBn Technologies may have spawned a new breed of Metronet. The wireless network, code-named CitySense, which will consist of 100 streetlamp-mounted nodes by 2011, will draw power off the Cambridge, Mass. public grid and be used at first for weather and pollution monitoring. The intention is to also allow 'academic researchers worldwide [...] to submit their own research programs to run on the network.' Sounds remarkably similar to the beginning of the ARPANET, except the network hosts will be running Linux."

75 comments

  1. Whoa! by alienmole · · Score: 4, Funny

    100 nodes by 2011? That's like, 25 whole nodes every year between now and then! How are they going to manage such a massive feat of engineering?

    1. Re:Whoa! by Anonymous Coward · · Score: 0

      why, smoke and mirrors of course ! Didn't you pay attention in science classes.. tsk tsk

    2. Re:Whoa! by nxtr · · Score: 2, Funny

      >>How are they going to manage such a massive feat of engineering?
      Let's just say some engineers will have light bulbs going off in their heads.

    3. Re:Whoa! by Plutonite · · Score: 2, Funny

      Was gonna crack the ole Beowulf cluster joke, then realized it would take them till the year 2460 or something to build it. I honestly don't understand how such small number can be of analytical utility. It would be great if someone could volunteer to RTFA and inform us.

    4. Re:Whoa! by coleblak · · Score: 2, Funny

      Whoa, whoa, whoa. You want us to read an article? I thought slashdot was all about spouting off opinions without reading anything?

      --
      77 HITS
      Really Long Off Topic Combo
  2. Programs? by QBasicer · · Score: 2, Interesting

    Why would there needed to be programs run on the network, if all the nodes are is data collecting points? Wouldn't it be easier to just store the data and replicate it for later analysis?

    --
    x86, oh yes, I'm pro.
    1. Re:Programs? by moderatorrater · · Score: 2, Interesting

      Wouldn't data collection itself require a program? Since it's got a processor, might as well lend the extra cycles to something ;)

  3. Clever by Anonymous Coward · · Score: 0

    During the day, they can use solar panels, and during the night, they can still use solar panels! ;)

  4. This will be a total failure by Anonymous Coward · · Score: 5, Funny

    I hear these network nodes will have flashing LEDs which will drive the local police forces apeshit.

    Expect many lawsuits and unjust imprisonment.

  5. Well..will it run lin... by Anonymous Coward · · Score: 0

    Oh! ok nvm..

  6. Sounds like my invention... by Anonymous Coward · · Score: 2, Funny

    I just mount solar panels underneath the street lamps and then use the generated power to run the lamps! Ingenious!

    1. Re:Sounds like my invention... by Anonymous Coward · · Score: 0

      Actually, if the collectors fed a battery of some sort during the day, that might not be a bad idea. Except then the Illuminati couldn't hide the otherworldly miscreations they regularly call into existence by systematically turning off the grid in different areas like they do now.

  7. But... by Anonymous Coward · · Score: 0

    But, will you be able to access Boing-Boing through them?

    Besides, I don't think this will catch on, many wireless devices have blinking lights on them.

  8. It's been done. by HaeMaker · · Score: 2, Interesting

    Anyone from SF bay area, Denver or Washington DC remember Ricochet? http://www.ricochet.net/

    1. Re:It's been done. by the_tsi · · Score: 1

      That was exactly what I thought of when I saw the word "streetlight". And after that I thought, "Man, what more cities need is a shitty proprietary wireless serial link to a low-speed wifi mesh! Then they can charge too much for it and get about four customers!" Those Ricochet guys had a PLAN!

    2. Re:It's been done. by Loconut1389 · · Score: 1

      Didn't know metricom was back in business- weird now that they have no chance with wifi hotspots catching on and being so easy to implement (and EV-DO for that matter). They're using 'a micro cellular data network' now supposedly. I had one of these back in the day- had to velcro a modem to the back of my LCD on my laptop and it had a cool looking RGB led (had never seen one of those before) and it could do a peer-to-peer network in the absence of a metricom network- that was pretty fsckin awesome at the time. I just dont see how they're relevant anymore- anyone care to comment on why I'm wrong or are they doomed to die a second, horrible death?

    3. Re:It's been done. by Loconut1389 · · Score: 5, Informative

      56K modem speed (for their second generation network) was quite impressive in its day- considering most people were still connecting to the internet at 19.2 at the time. The first generation network was still impressive. Sure 14.4 and 56K sound slow nowadays, for the buck it really was amazing. I remember the first time I sat down at a barnes and noble with my laptop and got on IRC and I was just flat out blown away. I knew lots of people who had it and it seemed they were poised to do quite well. For some reason the died off before WiFi really was accessible, and I never understood quite why. They seemed to have little problem negotiating WAP placement deals. Anyway- that proprietary wireless network predated 802.11 (I think) and was the only way to go for wireless. Its not like they jumped on when wifi was already around and said 'hey try our slow network instead'.

    4. Re:It's been done. by Myself · · Score: 5, Informative

      EVDO can't support the subscriber density that Ricochet can/could. Get a dozen active users per square mile and EVDO gets pretty sluggish. Ditto with EDGE/HSDPA.

      Wireless data is driven by the principle of geographic frequency reuse. If you can make short-distance transmissions, you can use less power, which means there can be someone else using the same channel just a short distance away. If you're far from your tower and need a lot of power, you tie up the channel for a wider area, meaning that fewer subscribers can be satisfied per unit of spectrum.

      With a microcellular network like Ricochet, there are several poletops per square mile, and the same channel might be in use several times within a square mile. With cellular towers, a single sector usually serves several square miles, so a lower user density saturates the spectrum. Ricochet never achieved user density to come anywhere close to capacity, whereas many urban EVDO sites run maxed out for hours a day.

      Metricom's Ricochet was ahead of its time, and not marketed effectively. They built a very dense, capable network, anticipating the internet growth that didn't materialize until many years later. They didn't have the financial resources of a giant cellular company to weather the lull, and their recurring costs killed them. Their assets were sold at auction, and have since changed hands several times. YDI/Proxim currently maintains Ricochet networks in the cities where they inherited contractual obligations, but the rest of the markets sit abandoned.

      Ricochet's still relevant in areas where cable and DSL aren't available, because while not speedy by today's standards, it wipes the floor with dialup and is more than adequate for most uses. The deployment cost is dirt-cheap, and the modems can be had for a song. That's part of the problem though, because you can't sell a customer a $100 modem if they can get it for $5 on eBay.

      The modems are also useful for peer-to-peer networking over distances that wifi can't touch. They do a mile in open space, and half a mile pretty reliably in an urban environment. The 900MHz band is wide open, and penetrates buildings much better than 2.4GHz. If you get 'em above the terrain, they'll do five or ten miles on the stock antennae. There's some user-driven research on the Ricochet Wiki if you're interested.

    5. Re:It's been done. by Anonymous Coward · · Score: 0

      I've gotta agree, I thought Metricom had folded. Anyway..

                Putting a radio on the streetlights was how they did it originally too, and is apparently how it's built out now, based on their website. The original radios were somewhere in the 900mhz band I think, and had a 115.2kbit per second serial interface. From what I read about it back then, that model got 80kbit-115.2kbit (being limited by the serial port rate). I assume the new ones are USB so they wouldn't have that limit 8-).

                One big advantage of this, it's cheaper! Data plans from the cellcos are $40-60. If I were Metricom I'd find areas that do not have cheap DSL available and roll it out there. I have a choice personally of $55 cable internet (which is what I have) or dialup... All the lines in town are run straight to the phone switch downtown, so the outer like 1/2 of town can't get DSL. Further in toward town, I could get 256kbit DSL for like $25, $35-40 for more normal speeds, and I think it's like $50 or so for 8mbit. I'd strongly consider Metricom if it was here (so long as they tolerate the odd bittorrent), to save serious bucks over the cable I have without having to go suffer with dialup.

    6. Re:It's been done. by Lumpy · · Score: 1

      Anyone remember packet radio? Packet Radio predates richochet by at least 10 years.

      --
      Do not look at laser with remaining good eye.
    7. Re:It's been done. by garcia · · Score: 1

      Ricochet never achieved user density to come anywhere close to capacity, whereas many urban EVDO sites run maxed out for hours a day.

      What you say is true but I was shocked with my speeds on T-mobile's EDGE network in Los Angeles compared to Minneapolis'. LA's speeds were quite a bit faster than what I experienced at home while I was expecting it to crawl along sluggishly.

      The phenomenon you mention is most noticeable when I move from the metro into areas like rural IA and roam on I-Wireless. Their speeds are wicked fucking fast.

    8. Re:It's been done. by aaarrrgggh · · Score: 1

      Metricom was the first stock I ever owned. I still feel a sense of geek pride when I see them.

      I wish this technology had kept moving... lots of opportunity for mesh networks to help with local and mobile network access.

    9. Re:It's been done. by SuperQ · · Score: 1

      AFAIK 802.11 (no letters, FHSS not DSSS RF mode) was around at the time.. but was usually in the form of over priced flakey breezecom gear. They were still 2mbit, and had way better latency than ricochet.

      What really killed ricochet was it's expensive licensed commercial spectrum, which translated into high customer access costs.

    10. Re:It's been done. by Anonymous Coward · · Score: 0

      Yep, it was in Seattle too. Other than being a tad slow and requiring a clunky external modem/antenna, it worked well. I used it in NYC, San Fran, and Seattle.

      Regarding TFA, why not use solar cells and batteries? Power the nodes by sunlight in the day and streetlight by night, and have a backup battery. Easier and lower maintenance. Most streetlights don't even have low voltage available, because the lights use higher voltage (440 or higher.)

      Captcha is "archaic"...how apt.

    11. Re:It's been done. by ramakant · · Score: 1

      A few entities tried to purchase the Ricochet infrastructure in the San Francisco Bay Area, simply for their positions on the poles and contracts for use, but all stopped when they realized PG&E (Pacific Gas & Electric) was holdig a $60 million warrant on the assets for the power they had been drawing since the service was terminated. Seems that the radios have been on the whole time. Two suggestions:
      1. Build remote shutdown into the radios.
      2. Make them field upgradeable, so they're unlikely to be 100% junk when a new wireless technology is introduced.

    12. Re:It's been done. by sunspot55 · · Score: 2, Interesting

      I used to work at Metricom and I can say that your 56k speed was VERY conservative. I believe they advertised 128k and we would routinely get 192k in the lab. It was faster than ISDN, which was your main option for high speed internet at home at the time (DSL was just starting to be released). Oftentimes the serial speed was limited by the RS232 data speed (I think the RS232 port speeds defaulted to 56k often). Both USB and RS232 were options on the Gen 2 modem and I recommended using the USB to anyone I knew who used the modems. They even worked USB with Linux as far back as 1999; Metricom was an early adopter and user of Linux and the modem enumerated via USB via some standard serial making it easy (well, Linux easy) to get the driver working. This was at a time when USB on Linux was pretty painful too. I must say I did enjoy working there; the technology was pretty exciting to work on.

    13. Re:It's been done. by Loconut1389 · · Score: 1

      I had a gen 2 modem at the very beginning of their existence (2nd/3rd SF Robot Wars (before it became Battlebots) era). They were only advertising 56k at that time. Unfortunately, after a day of running around with my laptop under one arm, climbing bleachers, and being wreckless with my laptop at Robot Wars, I stopped at a friends house on the way and when getting ready to go home I picked up the laptop in a hurry only to not quite get ahold of it and watch it land upside down on soft carpet from 1 foot or so with the ricochet modem velcroed to the back of the LCD, pushing in on that area and shattering the screen. I booted it up to hear the windows 95 chimes and couldn't see jack. I sold the modem to a friend and swore off ricochet for a while, then they went out of business. Anyway, I don't think my Gateway Solo 2100 had USB, and I'm not sure it had a 16550 UART. I remember confirming the 56k download speeds at many of the places I went to. I would have gotten the service again if I'd known they were headed for > ISDN speeds (7KBytes/s I think was one channel, 14KBytes/s was bonded wasn't it?).

    14. Re:It's been done. by Anonymous Coward · · Score: 0

      EVDO sluggish with a lot of users? Try telling that to people who live in Seoul or Tokyo....

    15. Re:It's been done. by markana · · Score: 1

      With my Gen-1 Ricochet as my home net connection, I regularly got 112K thoughput. It was *way* better than any dial-up at the time. I liked it so much that I bought a 2nd modem for my laptop, and had pretty good mobile connectivity anywhere in the area. Metro WiFi is only now getting to be as good as Ricochet was years ago....

  9. A city-wide wireless? by Opportunist · · Score: 1

    Would be sweet. I think we need more pollution here to get something like that too!

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  10. What's new about streetlamp wireless networks? by Ungrounded+Lightning · · Score: 1, Redundant

    They've been around at LEAST since Ricochet (1994).

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  11. Even better! by jddj · · Score: 2, Funny

    They're using a unique new design for the access points

  12. Been done before... by ZeldorBlat · · Score: 2, Interesting

    How is this any different than any other municipal wireless project? I suppose it's different because it isn't intended to actually provide public wireless internet access (in the short-term, anyway).

    Oakland County, MI is currently implementing a wireless network across over 900 sq. miles. Granted the free service is pretty slow (128 kbps), but the for-fee service being offered is competitive with cable offerings in the area.

    1. Re:Been done before... by Anonymous Coward · · Score: 1, Funny

      How is this any different than any other municipal wireless project?

      This one has the potential to shut the entire city down when someone calls the bomb squad.

      I bet Oakland County can't say that they call the bomb squad over any device with blinking green LEDs!

  13. But by MichaelSmith · · Score: 4, Funny

    The extra power from sunlight which you have ignored will feed back through the system and accelerate out of control. Every street light will become a white hot whirlpool of circulating energy until the city of Cambridge is burnt to a crisp.

    1. Re:But by Anonymous Coward · · Score: 0

      If it was Boston, I'd say go for it.

  14. Read that as "steam"... by daeg · · Score: 3, Funny

    I read the headline as "Cambridge's Steam-Powered Wireless Network". It was far more interesting with a wrong title. Maybe they should change the focus of their research.

  15. Re:It's a scalable implementation. by moderatorrater · · Score: 3, Funny

    I once saw a video of a severely schizophrenic man. Your post reminds me a lot of him.

  16. Metronet? by Dachannien · · Score: 4, Funny

    Metronet, huh? Is that like an Internet for really well-groomed straight guys?

    1. Re:Metronet? by markov_chain · · Score: 1

      No, it's Internet for a well groomed MAN ;)

      --
      Tsunami -- You can't bring a good wave down!
    2. Re:Metronet? by frostoftheblack · · Score: 1

      Metronet, huh? Is that like an Internet for really well-groomed straight guys? [wikipedia.org]

      ...I'm guessing that's no more the case than a metrocard on the Metro Transit Authority railroad and the Met[ropolitan Opera] and only for well-groomed, straight guys. Actually scratch the last one.

      --
      Do not mark in this space. For official office use only.
    3. Re:Metronet? by ch-chuck · · Score: 1

      Even more offtopic, isn't it funny how people rediscover old ideas and think it's something new.

      --
      try { do() || do_not(); } catch (JediException err) { yoda(err); }
  17. Who cares about Linux? by Anonymous Coward · · Score: 0

    "Sounds remarkably similar to the beginning of the ARPANET, except the network hosts will be running Linux."

    And it's powered by streetlamps

    And it's in Cambridge

    Amd it's wireless

    FFS - why pick out the linux part??

  18. !wireless network, but a wireless sensor network by Tetravus · · Score: 3, Interesting

    The author of the article doesn't emphasize that the interesting thing about this network (besides it being associated with Haaaavard and therefore news-worthy to certain people) is that it's a distributed sensor network. It doesn't just pass data between nodes, each node is capable of creating and sharing data with the rest of the network. In fact, that's the only thing that's interesting about this at all. I mean, did Google force Mountain View to install new wireless node poles when they put in their WiFi or did they just piggyback on existing infrastructure? And, as someone else has mentioned, Ricochet networks did the whole city-wide data network thing in the late 90's.

    So, if you've been looking for a place to test out your predictive models of chemical dispersion under real-world conditions, it sounds like Cambridge is the place to go.

  19. Re:It's a scalable implementation. by WhatAmIDoingHere · · Score: 3, Funny

    God, I really hope this is some character you're playing. Your writings sound a lot like the Time Cube guy. Random insanity and gibberish.

    --
    Not a Twitter sockpuppet... but I wish I was.
  20. Similar Thing Here by Comatose51 · · Score: 2, Informative

    Google Wifi is deployed here in Mountain View and they're also posted on street lamps. Is it just me or does this plan just not sound very impressive. Google's system is quite interesting. Every now and then there's a very massive and obvious wifi AP up high on a pole. The rest of them would be hidden inside the street lamps and all they do is relay traffic back to the other ones. This saves them from having to actually wire every lamp post.

    --
    EvilCON - Made Famous by /.
  21. Since it runs linux, by Anonymous Coward · · Score: 0

    This strategy allows a node to download software or upload sensor data to a distant server hub using a small radio with only a 1-kilometer range,


    the only question is: will it download porn?
    1. Re:Since it runs linux, by Anonymous Coward · · Score: 0

      It will, but it will run at 10 bits per second, and you will have to write your own (event-based) edge-finding algorithm to detect the, um, features :^)

  22. ARPANET=BBN by former-tech-dude · · Score: 1

    Interesting that you mention how this is like the beginning of the ARPANET considering that BBN created the ARPANET back in the late sixties! (and out of respect it's BBN, not BBn)

  23. Perhaps the bulbs last a long time? by Kadin2048 · · Score: 1

    Maybe that's the rate that the light bulbs burn out at, and they're installing these things at the same time to save labor?

    (I'm sure if we knew the number of total streetlamps in Cambridge, and the average lifespan of a Na- or Hg-vapor lamp, someone around here could probably compute the average number per year that would need replacement.)

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
  24. Packet radio by Kadin2048 · · Score: 1

    Anyone remember packet radio? Packet Radio predates richochet by at least 10 years.

    Packet radio, however, is hardly dead -- yeah, it's not exactly impressive to tell people "hey, I'm on the internet...over a radio" anymore, but there are still a lot of people doing some very impressive mobile stuff with APRS on VHF, or long-distance connectivity over HF.

    Not long ago I went to a lecture by a ham who had spent some time down in Central America building an email system based on packet radio for some humanitarian workers down there. It was a pretty neat system -- VHF connections for the local links, and then an HF connection for the long haul back to the 'States. Given that the previous system had involved writing down messages and handing them to a ham operator to transmit via CW or SSB voice, even a few hundred baud (transmitting 24/7) was a pretty dramatic step up.

    Only thing I didn't like about the system is that the software is all very Windows-centric, and some of the protocols they want to use are proprietary and/or patented (which I think is anathema to the entire concept of Amateur Radio and ought to be prohibited generally), sometimes requiring very expensive hardware modems. Not cool.

    But anyway, if you haven't looked into packet in a while, and this goes not only for current hams but also anyone generally interested in computers or communications, it's definitely worth a look. Amateur radio in general is in the midst of a transition, where a lot of the people more resistant to change are dying off, and there's a lot of room for software hackers to get in on the ground floor and do some neat stuff.

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    1. Re:Packet radio by Lumpy · · Score: 1

      I actually have. I just recently took down 8 digipeaters I had on the air on 2 meters and sold all the gear on ebay.

      The digi's have not been used for over 24 months by anyone but me, I gave up supporting a large packet network that nobody was willing to help with and the users dropped to zero because packet use has dropped to zero as 1200baud is too slow for anything anymore. APRS use around here has dwindled to nothing as well.

      2 meter repeaters has turned into CB radio around here.

      --
      Do not look at laser with remaining good eye.
  25. Re:It's a scalable implementation. by Anonymous Coward · · Score: 0

    Your prose is awesome. I suggest to others they read 'The Orators, an English Study" by W.H. Auden. From his lofty perch the Helmeted Airman can see everything, except perhaps his own madness.

    I'm going to make another margarita and fetch my copy now.

    Thanks for the prompt. Over and out.

  26. Metronet used to be an ISP in the mid 1990's... by Nick+Driver · · Score: 1

    ...in the D/FW Texas "Metroplex". I don't think they're in business anymore, but they used to be one of the pioneer ISPs there. One of my former employers back in the ancient days had one of the very first 56K frame relay commercial Internet feeds sold by Texas Metronet.

  27. Nothing new at all... by Nick+Driver · · Score: 1

    Cities all over the USA have been mounting 2.4GHz wireless mesh nodes onto streetlamp poles for several years now. It's bloody expensive to cover an entire city with these, you need about 20 nodes per square mile for decent coverage and the technology doesn't scale very well and tends to implode under stress and large number of nodes.

  28. Re:It's a scalable implementation. by Anonymous Coward · · Score: 0, Offtopic

    What queer mentality you
    have --- to worship an old
    dead Jew as God/Creator.
    NO God creates himself.
    No God can even exist in
    our Universe of Opposites.
    Opposites
    transcend Entity.
    Entity equals cancellation
    --- the death of Opposites.


    Evil Educated "Singularity"
    Stupid - ignores the Cubic
    Wisdom of Wisest Human
    and The Greatest Thinker.


    No human or god can match
    Nature's simultaneous 4 day
    rotation in 1 Earth rotation.

    No human has a right to
    believe wrong - for that
    would be evil thinking.

    Ignorance of 4 days is evil,
    Evil educators teach 1 day.
    1 day will destroy humans.

    OPPOSITES CREATE.

    Mother and father gave me birth, not a queer jew god.

    Singularity god is EVIL as
    Creation reigns as Opposites.
    Educators, and You - ought
    to be killed for ignoring the
    fact that "Earth is Cubed".
    (ignored and suppressed by EVIL educators)

  29. Name dropping by Rethcir · · Score: 2, Funny

    Hey make sure don't forget to mention linux

    1. Re:Name dropping by jonaskoelker · · Score: 1

      Yeah, but does it run...

      uhh...

      In Soviet Russia, Linux runs...

      nah...

      All your unix-base are belong to...

      well...

      Profit!

  30. Re:!wireless network, but a wireless sensor networ by Myself · · Score: 2, Interesting

    Actually, Ricochet poletops can be used to infer certain environmental conditions too, specifically the propagation of 900MHz and 2.4GHz signals. You can do this indirectly, by watching packet headers and tracking the paths that packets take between radios (longer hops if conditions are good), which has been done in at least one area for some time now. It's fascinating data; I hope to have pretty animated graphs of it some time soon. You could also do it directly, by interrogating each radio's node table periodically, to see the SNR and RSSI to each other radio it knows about.

    Prior to Ricochet, Metricom built Utilinet, designed to replace leased-line telephone circuits for control of utility switch and pump stations. Utilinet nodes could read their own power supply's input voltage, as well as temperature and a few other parameters. If anyone ever did cool stuff with this data, I'd like to hear from them.

  31. Re:It's a scalable implementation. by WhatAmIDoingHere · · Score: 1

    My homepage? What the shit are you talking about? The Encyclopediadramatica link? Yeah, it's called HUMOR, Mr. Insane Robot.

    I'm saying that YOU sound like the Timecube guy in your insane rambling. I work around whack-jobs, and what you write could EASILY come from one of them.

    Also, the Department of Redundancy Department bit is like 90 years old at this point, I'm PRETTY sure all the humor that will be gathered from it already has been.

    --
    Not a Twitter sockpuppet... but I wish I was.
  32. Tracing gunfire by Anonymous Coward · · Score: 0

    Looking at their map IMO this project would be great for tracing gunfire. Just add a microphone to each unit and use the age old practice of triangulation. I suspect that analyzing the characteristics of the sound could help increase the accuracy of the suspected location and possibly yield the type of weapon.

  33. Cambridge already has a Muni Wi-Fi system FROM MIT by geohump · · Score: 1

    Cambridge and MIT are already building a FREE public access Wi-Fi system called roofnet.

    They started long
    http://pdos.csail.mit.edu/roofnet/doku.php

    Interestingly harvard has stated plans to join roofnet.
    http://www.boston.com/business/technology/articles /2006/02/02/cambridge_mit_plan_citywide_wifi/

    The notion that a few weather sensors spead out over a tiny tiny tiny land area the size of cambridge MA somheow represents something significant is pathetic. That someone actually expended the effort and column space to put this in an IT Journal aimed at corporate officer level management, (CIO's) is simply incredible.

    " By Ben Ames" Watch this name folks. He's bound to produce more boners in the future.

  34. Re:Cambridge already has a Muni Wi-Fi system FROM by Anonymous Coward · · Score: 0

    The people doing roofnet have mostly suspended development on the project to form Meraki. Unfortunately, the ties to proprietary technology that Meraki is using makes it less interesting. However, there are projects such as OpenWrt used by community groups like Seattle Wireless (http://www.seattlewireless.net/), Personal Telco in Portland (http://www.personaltelco.net/) and Buffalo Wireless (http://www.buffalowireless.org/). These projects are using things like OLSR (http://www.olsr.org/) in order to create a mesh network on top of the OpenWrt linux distro. Perhaps these are some of the same technologies that the Harvard project is planning to use as well. It seems like it would be pretty easy to implement.

  35. Ummm... by bill_mcgonigle · · Score: 1

    You do know that the metro- prefix has been in use since Ancient Greece, right? At the time it meant 'mother' (the name of the Mother Goddess), as in the mother city (metro-polis) of a colony, but for well more than a century has been used as an English prefix, meaning 'of the city'.

    Ancient roots used to be covered in 5th grade English - sorry if I'm being age-ist and am unfairly criticizing somebody who hasn't yet covered that in school.

    --
    My God, it's Full of Source!
    OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
    1. Re:Ummm... by Dachannien · · Score: 1

      sorry if I'm being age-ist and am unfairly criticizing somebody who hasn't yet covered that in school.

      Teach me more, Grandpa!

  36. What CitySense is not... by Matt+Welsh · · Score: 1

    I happen to be one of the lead investigators on the CitySense project. It's cool to be slashdotted; and funny to read the comments from people who jump to incorrect conclusions based only on reading this fairly high-level and (admittedly not very good) article. If you want to know more check out our web page: http://www.citysense.net/. One of the big problems with popular press is that it is not targeted at folks who read Slashdot and crave the technical details.

    CitySense is intended to be the first (to our knowledge) wireless _sensor_ network to span an entire city. The goal is not to provide public WiFi access; as many others have noted, there are other projects afoot focusing on that. We hope to leverage existing wireless mesh routing from projects like Roofnet and CUWin rather than reinvent the wheel there.

    The main focus on CitySense is to provide an open testbed to support wireless sensor research - which means that the CitySense nodes (Linux PCs using 802.11a/b/g an various sensors) will be programmable. We plan to open up CitySense allowing anyone (even the l33t h4x0rs who read Slashdot...) to upload and run custom programs on the testbed. We envision researchers using CitySense to study wireless routing and MAC protocols; to better understand how 802.11 works in a dense urban setting with a great deal of interference and existing wireless networks; to implement new distributed services and systems; and to support domain scientists gathering data from the various sensors to understand things like how weather and wind patterns affect air pollution and particulate transport in the atmosphere. If you have other ideas of what CitySense might be useful for I'd encourage you to drop me an email.

    There are plenty of research challenges to address here. The major difference between CitySense and most of the public WiFi networks is that it will be programmable by external users; so reliability is of upmost concern. We'll need to develop some form of sandboxing to prevent users from hogging resources; and come up with appropriate policies for controlling access to the radios and sensors. Another major effort is developing an appropriate distributed programming model to make application development easier, to deal with failuree gracefully, and to automate software updates across the testbed. We think it's pretty cool stuff to be working on. Thanks for your comments.

    1. Re:What CitySense is not... by docwatson223 · · Score: 1

      A whole city grid of sensors and what could you do with it? Well, with IPv6 and ubiquitous RFID you could provide the means for everyone in a given area to be tracked and their movements monitored down to the square meter. Thieves would never be able to steal anything since the items they have would be tracked to wherever they go to and cross tracking of their IDs would give you everything that you needed to apprehend the scofflaws. Of course, everyone who chose not to take the chip would be an 'illegal' anyway and forced to steal to feed and clothe themselves and their kids. This tech would be a great way to root out those idiots and make sure they received reeducation and the chip they are so afraid of. I mean, really, the sensor grid is there to protect us from terrorists and outlaws who can't understand that tracking is for our own good.

  37. MOD PARENT UP by Anonymous Coward · · Score: 0

    He sounds like he RTFA. :)