Slashdot Mirror
Wi-Fi by Rail, Bus or Boat
securitas writes "The New York Times' Glenn Fleishman writes about the growth of 802.11x WiFi wireless Internet access on commuter rail, bus and ferry boat now that it's commonly available in restaurants and coffee shops. The article also has an illustration by Al Granberg of some of the techniques used to achieve ubiquitous WiFi in motion."
The Slashdot Paradox: "100% Overrated"
And posting as AC just for the anti-whores:
Destination Wi-Fi, by Rail, Bus or Boat
By GLENN FLEISHMAN
Published: July 8, 2004
BOARD THE KLICKITAT,
on the Admiralty Inlet, Wash.
THE Klickitat, a 1927 steel ferry boat plying waters between a 19th-century port and an island harbor, may seem a quaint way to travel - and an unlikely place to get work done. But it may be headed for a new frontier in Internet access for commuters.
The ship is the test bed for a plan to offer high-speed wireless Internet access on most Washington State ferry runs, serving tens of thousands of regular commuters.
Through a federal grant, the ferry system will roll out an expanded test of the Internet service this summer and fall on seven ships serving the three busiest runs, covering 50 percent of the system's ridership, or about 12 million passenger trips a year. When the first of those routes joins the trial, the effort will become the largest commuter Internet experiment ever.
As such experiments gather momentum, ready access to e-mail and the Web may become increasingly common on the way to and from the office.
In the United States, nearly six million people commute daily by public transportation, according to the Department of Transportation. Few operators offer wireless Internet access in their stations and terminals - much less on board - even though it is now routinely found in many airports, hotels and coffee shops. But trials and planning are under way in several countries to determine the technical feasibility of offering mobile Internet access, and whether commuters will ultimately pay for the privilege.
Providing Internet access on vessels and vehicles is not as simple as adding it to a fixed venue, like a restaurant or even a convention center. Boats, buses and trains have metal skins or hulls that block wireless signals. They move, often at average speeds of 20 to 100 miles per hour, requiring a system that can rapidly and seamlessly hand off a signal. And they could have large numbers of simultaneous users, many of whom are already working on laptops during the voyage.
Jim Long, director of information technology for the Washington State ferry system, said that boats on the Bainbridge Island-to-Seattle run carry 2,600 passengers during each rush-hour trip. Based on his observation of commuter work habits, he said, "you could have upwards of 300 to 400 at any one time trying to access the Internet - those are concurrent users."
Airlines, too, are looking at making Wi-Fi connections available to passengers, and face some of the same challenges. Two competing services, Connexion by Boeing and Tenzing, provide Internet access (at $10 to $30 per flight) by connecting to satellites relaying service from the ground. But the commuter projects offer the potential to become part of a daily routine, and perhaps an incentive for some people to abandon commuting by car.
The companies working on commuter service have taken various approaches: relying on a combination of cellular towers and satellite data links, erecting dedicated antennas in a line of sight or at points along the route, or limiting service just to terminals or stations on either end of a run.
The Washington State ferry test is one of several in the United States and abroad. Internet access on rail was inaugurated early last year on a route between Sweden and Denmark, and regular service is beginning on certain train lines in Britain, including the Great North Eastern Railway linking London with much of England and Scotland (free for first-class passengers, about $9 an hour for others). There are also plans to test an Internet service for municipal bus riders in Paris.
A Canadian company, PointShot Wireless, is providing Internet service for trials on two rail lines in Northern California and another in Canada. So far, the PointShot tests, like the Washington State ferry project, are free - beyond the user's investment of $50 or so to equip a laptop with a W
Isn't this the very same article The Register viciously assaults for being biased? Intriguing...
Gentlemen, you can't fight in here! This is the War Room!
I'm not a networking expert either, but to the best of my knowledge this is usually done with IP tunnelling. You don't have to have any coordination between AP's - each of them can have its own subnet or something. To connect, you log in and set up a tunnel to the gateway, which gives you another IP address with Internet access. When you switch cells, your actual wireless interface gets a new IP address, your tunnel re-authenticates and you're back online with maybe a few dropped packets, but no interrupted connections.
Karma: Segmentation fault (tried to dereference a null post)
The grandparent clearly said they're neighbours not wardrivers and that they're hacking the (presumably WEP) encryption. This is quite believable, especially if you're in a techie neighbourhood and the people in the next house can't afford to get 3Mbit broadband like you have - it only takes a day or so of capturing and cracking frames to gain access, a quite reasonable feat if you're stationed near the access point and have the knowledge of how to run a simple cracking program.
The UK has numerous train-borne WiFi servuices, which work through a combination of satellite uplink and GPRS connections through tunnels.
The Slashdot Paradox: "100% Overrated"
But isn't there an extra lag involved with WiFi? Throughput is one thing, lag another...
Stop by my site where I write about ERP systems & more
Take a look at this story:
Wi-fi hopper guilty of cyber-extortion
If you can read this sig - the bitch fell off.
I heard (from a pilot, but it was 1995 when he told me this) that you can't use cell phones because you would be in range of a number of cell towers at the same time, which would mess up either your cell phone or the towers. My guess is that problem has been solved by now.
I also remember at the time having a cell phone sitting next to a pair of powered speakers. A 1/2 second before the phone would ring, the speakers would shut off. I'm not sure what kind of EM emission would cause it, but I don't think I'd want that happening in a plane. Again, I think newer cell phones aren't quite as bad, but Mythbusters did have an episode where they measured the EM of a cell phone before/during a call and it was higher just before the phone rang.
Put a Nokia TDMA phone on your CRT monitor and call the number. You'll see the screen vibrate and distort just before it starts to ring. There's definitely some interference there.
sulli
RTFJ.
If you reply, do so only to what I explicitly wrote. If I didn't write it, don't assume or infer it.
DailyWireless reviews the technology of WiFi Trains:
The small Possio AB, a Linux-based access point, can provide local WiFi and connect to the backbone using 3G (EV-DO) mobile backbones for a couple hundred dollars.
Perhaps a load-balancing router would help. The Xincom - XC-DPG402 ($150) a 4-Port 10/100Mbps Twin WAN Router can combine two different backbones into one. P
Bob Cringeley uses the Xincom box. It works with his Vonage (VoIP) adapters, too. That's how WiFi on Trains provide constant connectivity.
How about "unwiring" your transit agency.
Additional DailyWireless.org articles include and WiFi on Mass Transit as well as stories on Wireless Ferries, Wi-Fi Ferry Testing, WiFi on Canadian Trains, Limousine Wi-Fi, Highspeed Mobile Roaming, Internet Rickshaw and Mobile Access Points.
Dunno about Via Rail, but you can certainly access the hotspots in Air Canada's premium lounges at Trudeau Airport in Montreal from nearby gate waiting areas...