One Glimpse Of The Wireless Future
SemiBarbaricPrincess writes "Check out this story at wired.com about wireless networks on college campuses. The focus is on Dartmouth College." It would be great to see this kind of wireless community outside academia too.
Sooner or later, it's going to hit its saturation point. Just like with any other network.
The only problem with 802.11b is that you only have a relatively small range to work within. It doesn't take much to have so much traffic in the 2.4 GHz band that smaller wireless devices become useless in anything but Ad-Hoc mode. The future may not so much be in providing wireless technology as Dartmouth suggests, but in developing technologies that control the manner in which these devices communicate (e.g. some way to tell a client to use a different channel, switching, trunking, etc.)
Ich liefere Ihnen Licht und Kraft
Und ermögliche es Ihnen Sprache, Musik und Bild
Durch den Äther auszusenden und zu empfangen
Ich bin Ihr Diener und Ihr Herr zugleich
Deshalb hütet mich gut..
Mich, den Genius der Energie.
Bowie J. Poag
It would be nice to see this *in* academia, too. The main thing holding it up (insofar it is currently held up) is price, which is certainly something students are concerned with.
While I obviously expect that it will get a bit cheaper, are there any companies out there that truly do focus on 'same bang, less buck', or are they all just trying to up both these factors at the same time?
Speaking from a student's standpoint, obviously.
Plenty of other schools have had this stuff for a long time now. Yes, the article's interesting if you're into networking and/or wireless data transmission, but their explicit focus on Dartmouth makes it seem as though they're unique and trendsetting.
Dude. Seriously. Did you read the article at all? Quote:
Dude. Seriously.
Here at University of Maryland at College Park, the Office of Information Technology has been pretty quick in rolling out 802.11b throughout campus. We're not at the magical 100% coverage point, but you can walk into most any building and find a spot with coverage. The entire outdoor mall is wireless, too - laying out on the grass on a sunny day while coding a CS project and doing some IM on your laptop is really nice :-).
I think that technology like this could be astoudingly useful in the classroom, and it saddens me a bit that we haven't really made any serious attempts to integrate it... money I suppose. Zapping notes and due dates into PDAs would be nice, at the minimum - cuts down on communication errors.
I predict we'll see serious usage of these technologies in 10 years - gotta give traditional educators some time to cope with them.
-Erwos
Plausible conjecture should not be misrepresented as proof positive.
Im in the "Wireless Pilot Program" at the college of engineering at nc state and we dont have nearly this much coverage, just some of the buildings have partial coverage, and the only outdoor coverage I know of is at "The brickyard" which is traditionally the most trafficicked spot on campus. I think the library has full wireless coverage as well.
"The United States has no right, no desire, and no intention to impose our form of government on anyone else." - Bush 05
Here at UC Berekeley they've been running a pilot program called AirBears. Basically they outfitted a few facilities (library, some cafes, etc) with 802.11b access points. Because it's a pilot program, it wasn't publicly advertised. People who are using wireless do so because they heard about it through word of mouth from other users. They're running software to track access leves at the various points around the campus, and it seems the number of users is in the mere dozens (although its increasing). And those few users account for a lot of traffic. I can only imagine what would happen if hundreds of people started using the same access points. The system would probably break down and become unusuable. Has anyone here experienced a densely used WiFi network?
This is a great example of how pervasive, open wireless hotspots can empower individual communication in unexpected ways.
.
It will not be long before this kind of saturation is common in all the metropolitan areas (previous studies have placed wireless growth at double the current deployment by 2005)
The biggest potential uses and applications are centered around peer network integration that support the style of personal, interactive communication people crave.
There are a few projects working towards this goal like the Janus Wireless Project . This will provide not just increased internet access reliability and throughput (using multiple AP's and simultaneous associations) but also tight integration with common peer network services, like file sharing, music broadcasting using a broadcast FEC transport and playlists, even Voice over IP.
This kind of infrastructure has to be built by philantropist coders, as the business model is lacking, however, this makes it all the more tuned to what users will want, and the resulting networks in full control of those who generously provide the hardware and network connectivity (such as the Personal Telco Project
I can only begin to imagine the possible applications of a robust, open wireless network coupled with integrated peer network services and good internet connectivity. This will be one of the most interesting and innovative areas of growth in the near future.
Going wireless takes on huge security issues. How is Dartmouth going to deal with tightening down security?
I'm sure they have some sort of authentication/encryption scheme worked out. You don't have a bunch of techies spend that kind of money without security entering into the equation.
But they've also got something else going for them: Dartmouth sits on a tiny town in New Hampshire (Hanover), where almost everyone is associated with the college. Not much incentive to put up walls that block 1 or 2% of your daily users...
I go to a college at a university in Australia, and they have just spent AU $800,000 to secure our network. The efforts they have taken to secure the network this year have cost more than has been spent on the whole computer system in the past 14 years. In my mind this is damn stupid, because it took the IT club (in no way linked to the admin of the College) 13 min to bypass the new security measures, (while we were drunk(!)) This leads to the obvious question of why to bother. Can a system actually be made safe against people who really want to bypass it?
psxndc
The emacs religion: to be saved, control excess.
Garbage. Don't believe the hype. Where are banks being robbed? Where are spammers using other people's networks? (hint: whatever you've read, there's not been a single case so far, there probably will be eventually, but there hasn't yet been.).
How is Dartmouth going to deal with tightening down security? I know of people that drove down through a city with a laptop and pringles cans and picked up alot of wireless networks (including a state lottery wireless network). So that would be the biggest concern for me.
There's plenty of technologies out there that can lock down a network. I set up a network that used VPN software. Anyone could connect to the network. Wouldn't do you any good if you didn't have a password though.
I would rather be wired and go gigabyte
Gigabyte? Not gigabit? Gigabyte has not been deployed anywhere as far as I know. You can actually buy wireless networks. Gigabit has huge issues, the range is in feet, unless you go fibered, and that's expensive still, more than wireless.
than go wireless and be stuck at speeds less than 100 megabytes. Wireless is nice, but it is also more expensive than staying wired.
The wireless cards are currently about twice the price, but NICs and hubs are one of the cheaper components in a system, and they're coming down rapidly.
-WolfWithoutAClause
"Gravity is only a theory, not a fact!"I don't know about Dartmouth, but at CMU, you have to register your MAC address. To do that, you need to have a campus username and password. If you didn't register, you the DHCP server doesn't give you an IP.
Look, ma! I'm a karma whore
They're right about nobody knowing how this revolution will come about.
Read page 2: Female initiating sex, now that's revolutionary!
My Karma was at 49, then they switched to words. All that work for nothing!
NCSU works the same way, also we dont run WEP encryption under the philosophy that its so easily cracked, its not worth the extra overhead
"The United States has no right, no desire, and no intention to impose our form of government on anyone else." - Bush 05
and all I have to say is:
AAGGHHHHHH my eyes, they burn!!!
I can't wait for a day when I can walk down the street, and have every business within 1 mile try and push advertising onto my devices.
The Kruger Dunning explains most post on
...from my Stats classroom, about 15 minutes before class starts, on my laptop, via the University of Akron's wireless connection.
;)
I used to think this kind of stuff didn't matter. You use it once, and then after that, you wonder how you ever lived without it. No worrying about transferring files from lab computers back to my home computer, no worrying about missing messages, the ability to actually be productive during time when I'd normally just be waiting for stuff...
It's an incredible thing. What else can you call an innovation that lets a person read Slashdot at any time, from anywhere on campus?
Security concerns over 802.11b usually resolve around people plugging access points directly into a corporate network. That's not the case here. Think of the wireless cloud like the public internet. I see three security issues, two of which are easily addressed.
1) security of the end users machine. Most of us would shudder at the though of connecting a desktop windows box directly to the internet. Since the average student is only online for 16 minutes at a time, there's enough of a moving target to make this easily as secure as 85% of dialup usage.
2) privacy of the data. There is none. Neither is there once your packets leave your wired ISP. Deal with it, or use GPG.
3) abuse of the network. Drive-by spammers, kiddie-porn downloaders, and so on. MAC addresses can be snooped and reused. Possibly the triangulation tools they were talking about can help you prove that it wasn't you downloading live goat porn in the lecture hall in the middle of Prof. X's lecture, even if it was going to your MAC address.
--
E_NOSIG
Requiring the laptops pretty much sucks and further pushes post-secondary education into the hands of the haves.
University texts have long been a scam. One class on OS theory/design I took had a book on the M68k processor as required reading. It cost us all 80 bucks each, as being a first print, there were no used copies to be found. We didn't crack it once all semester.
But what a coincidence! The author was none other than the professor teaching the course.
Some of the 'minimum requirements' that schools require for their laptops are brutal. Alot of the time you can only realistically meet them at the campus Computer Shoppe, another shocking coincidence.
I'm not talking about required equipment for computer science, but they're starting to force the crap on everyone.
Now you have to buy a 2 grand laptop instead of a 500 dollar desktop, because its ever-so-important that your english lit TA be able to AIM you the reading assignments. Bah.
I don't need no instructions to know how to rock!!!!
We have a few hundred AP's on campus at UF, that cover a fairly large piece of a very large campus. The coverage map (mostly accurate) is online, as well as instructions on connecting.
The nice thing about the network here is that no mac registration is necessary. The wireless network is seperated from campus by filters that can only be broken through via VPN connection to the campus VPN server, or authenticated with their campus 'gatorlink' login. When we first developed the system, no commercial products existed to do what we needed (though today there are many); any web traffic is automatically redirected to the authentication server that allows the users to login with their campus login, and their mac is added to the auth table after a successful login. This makes the service easy to use, transparent, and compatible with just about every platform you can think of. Of course, no encryption by default if people choose to take that route, but that's why we offer the VPN as well.
I never said you did.
Many schools do, and its wrong because there's no cause for it. Now, more will, citing the 'gee-whizness' of wireless as a good reason.
Universities shouldn't be in the business of forcing any product on students without a valid educational reason.
It's like requiring SegWay scooters because they 'revolutionize' walking from class to class.
Just an opportunistic rant, don't be offended.
I don't need no instructions to know how to rock!!!!
Or is a story on wireless networks run by Wired magazine just a bad idea to begin with?
The University of Rochester now has wireless in the library, the academic quad, and the commons building. Anyone can connect to the access points but you have to log in (via an HTML page) to the URNET with a userid/password. Very nice system.
:-p
On a semi-related note, I set up a linksys AP in my room... one of my suitemates discovered he can now get connectivity on the toilet. Oh, the places we'll go!
My wireless card can't pick it up in our lounge (20 feet away), but for some odd reason I could get it across campus (half mile, and no LOS that I could see) - anyone know what the hell is going on there?
I don't see it going so far as saying 'radically' changed.
It says some jibber jabber about AIMing the teacher because the students are too scared to put their hands up with the wrong answer.
That's hardly radical.
Giving your opinions, right or wrong, and then taking your lumps and learning from it is an important part of education.
Wireless is neat and convenient, but hardly necessary for a good university education.
I don't need no instructions to know how to rock!!!!
It would be great to see this kind of wireless community outside academia too.
Then set one up. No one is stopping you.
Also, I recently setup a wireless router at home, and got an 802.11b card for my laptop. Now I can browse the internet on the couch in front of the tv, posting dumb comments to /. threads ;)
While not exactly at the front of the pack on wireless, Dartmouth has had a number of interesting contributions to the field:
- DCTS/DTSS: Dartmouth developed an early timesharing system in the late 60's
- BASIC: Kemeney & Kurtz, a pair of professors, wrote Beginner's All Purpose Symbolic Instruction Code in 1964. It's easy to dismiss BASIC, but a lot of people got their start with it.
- Synclavier: Jon Appelton, currently the head of Dartmouth's electroacoustic music program, developed this digital synth in '78 at New England Digital. It was widely used through the 90's.
- Networked Campus: Dartmouth adopted a "port for every pillow" philosophy in 1984 and wired the whole campus with appletalk. They got a lot of mileage out of that network.
- Required computers: Dartmouth has mandated computer ownership for all students since (i think) the class of '91. Having it mandatory means students can get financial aid for their computers, if necessary
- blitzmail: dartmouth wrote an email program in '84 (?). nothing amazing or groundbreaking, but the the widespread adoption of "blitz" in combination with the mandatory computers and ubiquitous networking had a huge effect on the campus social scene, and did a lot to bring dartmouth grads into the information age.
I'm sure there's more i'm missing here... anyone?
circa75.com
I live in Hanover, NH (the home of Dartmouth College) and discovered their extensive wireless network about a year and a half ago. It is truly an impressive piece of work. There is a "green" of about two acres in the middle of town that is blanketed with 802.11, but that's not so exciting as the fact that almost anywhere in downtown Hanover an ambitious surfer can lock on to Dartmouth's connection. Eating a sandwich in out local Subway, I surf the web. Driving through town, I check my e-mail and cache Slashdot.
The network is comprised of a vast number of Cisco Aironet access points with high-gain antennas. One can roam seamlessly on it, and the signal is consistently strong. There are, in fact, so many access points that one can pinpoint a computer's location on campus by getting latency from its MAC to three access points.
The only problem is: the wireless network doesn't broadcast its name, so you have to know it or find it out. And I"m not going to tell you.
--Bennett Prescott
Former Lord Of Packets
I hate to bring you the bad news, but, VPN Passwords aren't secure on a wireless LAN or a hubbed network.
It would only take a good cracker about 45 minutes to get the password.
And if RFMon was used, you wouldn't even know it.
-cheers
Get paid to code OSS
Roaming (and automatic handoffs) are one of the features that sets Cisco/Symbol/high-end Orinoco APs apart from many cheaper ones (Note: Such features are quickly drifting downwards to lower-priced units, I believe some Linksys APs now support roaming too).
Hopping from cell to cell (AP to AP) is the key to cellular phone systems having such high capacity. Need more capacity? Can't afford more spectrum? Drop your power level down and pack the cells more closely together.
If Dartmouth has 460 APs, that means that they are running at relatively low power levels, i.e. their network is quite segmented to distribute the load.
Still, some APs (like those in cafeterias) could be a little overloaded.
retrorocket.o not found, launch anyway?
A lot of corporations frown upon 802.11 due to its security isses.
Small corporations, not as much (due to ignorance). Large corps, majorly different story, even thought they could potentially benefit from it more.
That said, the article doesn't just talk about Dartmouth's coverage, it talks about how much 802.11 has been integrated into Dartmouth lifestyle.
I went to Cornell, by no means a backwards school. But laptops were few and far between and Red Rover (Cornell's network) sucks coverage-wise. It's also far more closed than Dartmouth's network.
The writer mentions that it took a day or two of being present at Dartmouth before he saw someone using a cell phone - That shows just how much impact cell phones are having on life at Dartmouth. At Cornell, if you go for more than an hour or two without seeing someone yakking on a cell phone, it's impressive. It's especially true for the younger incoming classes (those who were sophomores when I was a senior, for example) - My upstairs neighbors were all sophomores, and to picture them NOT being attached to their cell phones is unimaginable.
retrorocket.o not found, launch anyway?
In the article about Dartmouth they note that Dartmouth's network is intentionally left wide open, in the true spirit of academia.
Harvard could likely be intentionally wide open, or they could be like Cornell's Red Rover service. You can associate, you can get an IP, but good luck getting your packets routed beyond the gateway unless your MAC is registered.
retrorocket.o not found, launch anyway?
In my GF's school they have 802.11b in the common areas/lounges/study rooms of buildings but not in the classrooms. I wonder how they do this.. Is it just judicious placement of access points, or is there some sort of shielding you can put in the walls to block the signal out of the classrooms?
... this quote:
;)
"Each homecoming night since 1920, members of the freshman class have built a towering bonfire at the center of the green, running a lap around the pyre for every year of their graduating class (the class of 1999 did 99 laps; not to be outdone, the class of 2000 did 100)."
Nice, they're POSIX compliant since 1920..
We're talking about VPN (i.e. IPSEC) here, not WEP- I turned WEP off completely in fact, it's junk. You seem to be getting the two confused.
-WolfWithoutAClause
"Gravity is only a theory, not a fact!"There's an interesting use of 802.11b technology at Vocera. It's a small device you can hang on your shirt like a Star-Trek communicator that uses wireless network infrastructure and voice recognitioh.
Stop worrying about the risks of nuclear power and start worrying about the risks of not using nuclear power.
Why? The phone man just left here after giving me the bad news that my new 7100/768 DSL circuit will never run over 5000. Why? Crosstalk in the cable pairs. Poor pair management. Wireless will eventually take over....networks using cables for the 'last mile' are beginning to degrade. Wireless will continue to improve. Once they cross..and they will..wireless will never look back.
"It says some jibber jabber about ... " /.!
WOW I didn't know Mr. T posted on
cool.
The Kruger Dunning explains most post on
What about using it for illegal activities? Does the university incur a liability for that?
There should be a moratorium on the use of the apostrophe.
Max V.
NeXTMail/MIME Mail welcome
On my PowerBook, I can simply boot and go. No limitations whatsoever. When I first got on the wireless network in the '98/'99 year, I had to register my MAC. When I got my Mac, though, it just worked and I never bothered registering.
There should be a moratorium on the use of the apostrophe.
Max V.
NeXTMail/MIME Mail welcome
It made a huge impact on the usefulness of the computer equipment; probably the biggest immediate change was nearly eliminating paper from meetings.
I set up a wireless net at home pretty much concurrent with the work rollout; it changed the way I used computers at home, too. One of the first things I did with it was get play-by-play of a Red Sox game while my wife watched the Mets on TV, but it didn't take long before IMDB overwhelmed Maltin's too.
jim frost
jimf@frostbytes.com
CLEARLY these EKT girls are running a porn cam site from their sorority house...
The sisters of Epsilon Kappa Theta are definitely up to something. The wireless cards in the sorority house's computers each move an average of 222 Mbytes of data per day -- only one other spot on campus, an administrative building, moves more than 150 Mbytes a day per card. An MP3 server, perhaps? Maybe they're watching streamed video on a big-screen TV -- or using high-bandwidth Internet radio to supply the music for all-night parties. They could be trying to corner the market on Diesel jeans via sorority eshopping excursions, or running a molecular modeling program for a pharmaceutical company. We may never know for sure. Since the college has a strict policy against monitoring student computer use unless investigating complaints, university officials couldn't tell me what's going on. The sisters of EKT did not respond to my prying emails. So for now, their secret remains safe.
The sisters of Epsilon Kappa Theta are definitely up to something, moving an average of 1.3 Gbytes a day.
E V E R Y T H I N G I W R I T E I S F A L S E
Hmmm... I suspect you'll find that strada isn't covered. The Free Speech Cafe is, on the other hand, so perhaps you'll want to switch your alliances. It's not quite the same, I'll admit...
At FIU down here in Miami we've been making progress. We've got access throughout the library, in the student union, and in parts of maybe a third of the buildings on campus. I can get access in some of my classrooms but not others.
One of the features I think is nice is that in the library you can borrow a wireless-enable laptop for a few hours, and the computer lab elsewhere loans out PCMCIA cards.
As for security, you have to register the MAC address of your card (through a nice automated system that lets you get up in under 15 minutes) before being able to connect.
I'm a student at RIT where they're trying to roll out some 802.11 access points, they're doing it in like places that have a lot of people, like the cafteria and some choice places. Tried driving outside with netstumbler and such and found NO access points, and the AP's are open. Apparently the brick (99% of the buildings here are done in brick) so it does wonders for security on the AP's.. have to be INSIDE the building and close to the AP to get anything.
Kind of sucks, there's no AP for outside usage.