Nowadays,
Pam Martin is facing challenges well beyond anything she
was trained for in teachers' college, just a few years
ago. Since September, she has been starring in a
multimedia extravaganza.
Besides the fresh, eager faces in front of her, there
are ones she can only see in the two television monitors
facing her. When a student leans forward to ask a
question, he might be sitting at a desk a hundred
kilometers away. When she turns to face him, she has to
look at a camera high on the back wall of her own
classroom. And when she asks him to come up to the
board, it's really to an electronic whiteboard in his
class that's connected to an identical one in her
classroom by the same high-speed network that joins the
cameras and television monitors.
This pedagogical spectacle uses more than a million
dollars in equipment for just six schools in the
district—or division, as the Canadians call it—of Fort
Vermilion, in the western province of Alberta. Martin
and her colleagues are now teaching students in up to
four classrooms at once, many of whom they've never met
face to face. It's the decades-old dream of
long-distance learning, come to life here in the remote
Canadian outback, thanks to a remarkable new
communications network called the Alberta SuperNet.
The SuperNet is one province's determined attempt to
create a high-speed telecommunications backbone
throughout a land mass bigger than the Iberian Peninsula
but with fewer people than Albania. When it's completed,
sometime after July, it will tie together 4700 schools,
hospitals, libraries, and other government facilities in
just about every dot on the map of Alberta—422 dots in
all. SuperNet won't itself be an Internet service
provider. Rather, it will provide raw network
connectivity via the Internet protocol—the fundamental
global standard for moving around packets of data.
What's more, SuperNet will let Internet service
providers connect to its broad backbone at excellent
rates and guaranteed levels of service, making it likely
that in a few years, nearly every Albertan will have
megabit-per-second broadband access, even in towns with
only a few hundred inhabitants. Yes, places without
cellular phone service, cable television, or even copper
telephone lines good enough to feed a 56-kb/s modem will
be able to offer broadband service at rates and prices
that would be the envy of Tokyo, Helsinki, or New York City.
And that's precisely the point. The 21st century has
dawned with Tokyo having more telephones than all of
Africa, and Finland boasting more Internet hosts than
Latin America. Countless analysts have lamented the
so-called digital divide that separates not just rich
and poor but also urban and rural into Information Age
haves and have-nots. As the chasm yawns ever wider,
rural and remote communities struggle to keep their
talented young people educated, employed, and
entertained, in hopes of stemming the same sort of brain
drain that funnels many of the best and the brightest
from poor countries to rich ones.
Winner:
Alberta SuperNet
Goal: A
telecommunications backbone covering the entire province
of Alberta, Canada, including 4700 government-related
facilities in 422 communities
Why it's a
Winner: SuperNet bridges the digital divide,
puts schools and hospitals online, and makes it easy for
Internet service providers to enter even the smallest of
towns and villages
Organizations: Bell
Canada, Axia NetMedia, Government of Alberta
Center of
Activity: The entire province of Alberta
Number of People on the
Project: 249, across the three organizations
Budget: US
$145 million
Now the SuperNet, with its combination of fiber optics
and relatively inexpensive radio-based long-distance
links, reliance on the Internet protocol (IP), and most
of all, its ingenious business model, offers the best
blueprint yet for a bridge over that digital divide.
Although the SuperNet isn't quite finished, it's easy
to see how it is going to transform life in Alberta. And
the beneficiaries won't be just Web surfers, teachers,
and students—although it's hard to overstate the
advantages of effective distance learning in a school
division where some schools are a three-hour drive
apart, where the two "big" towns have fewer than 4000
residents, and where the closest sizable city, Edmonton,
is nine hours away by car. Hospitals will use the
SuperNet to send X-rays to a radiologist instantly,
bypassing an eight-hour helicopter ride or a three-hour
narrowband modem transmission. The connections will be
fast enough to let an obstetrician in Edmonton watch a
high-definition ultrasound image in real time, even if
her patient is hundreds of kilometers away.
SuperNet will also be a boon to Alberta's critical oil
and gas industry, which is spread throughout the
farthest corners of the province. Vocational schools in
Calgary and Edmonton will feed multimedia digital
pipelines that offer instruction in welding and other
desperately needed trades to 17-year-old apprentices who
will be able to live at home instead of making the
lonely move to the big city, where, all too often, they
fail. In their off hours, those same teenagers will use
those same data pipes for interactive television and
video games, in communities too small for cable TV to
ever be profitable.
Getting a high-speed telecommunications network into
the remotest of Alberta's remote communities took
skillful engineering but, even more important, unique
cooperation between government and business. So SuperNet
is really two networks that operate as one. The base
network, owned by Bell West Inc., in Calgary, Alb., a
subsidiary of Bell Canada and Manitoba Telecom Services,
is nearly complete. It will link Alberta's 27 largest
cities with a multigigabit fiber-optic backbone that
pushes the limits of what Bell would have built anyway.
The connections of the remaining 395 towns to the base
network, and to one another, make up the extended
network, paid for by a CA $193 million (about US $145
million) investment of the provincial government.
Both the base and the extended networks rely
completely on IP, increasingly the standard for bundling
up packets of data of all kinds and sending them through
all manner of network pipes. Though it was originally
designed specifically for Internet traffic, such as
e-mail and file transfers, network designers are coming
around to the idea that IP can replace traditional
digital telecommunications standards, such as the
synchronous optical network and asynchronous transfer
mode protocols that still dominate telco networks.
SuperNet's province-wide embrace of IP is a starting
point for its bold plunge into telecom's future.
Although the provincial government is financing the
extended network, the details of the business
arrangement make it a far cry from past
government-funded attempts to span the digital divide,
which have always fallen into two categories. In the
first, the government builds a network, which quickly
becomes second-rate (if it doesn't start out that way),
because there's no ongoing revenue to keep it up to
date. In the second, the government picks a winner,
usually the local telecom monopoly, to offer broadband
access. But that has problems of its own. Unless
required to serve remote areas, the company doesn't. It
refuses to allow Internet service providers onto the
network, because it's in competition with them. And
monopolistic control invariably leads to high rates.
SuperNet, on the other hand, carves out a new path
between those two extremes. Bell, Canada's largest
communications company but not the local monopoly in
Alberta, is building the extended network. The
government, having paid for it, will own the extended
network, but a local company, Axia NetMedia Corp.,
Calgary, will control customer access to the entire network.
Axia will give Internet service providers and others a
single point of contact for connecting to the network at
any location. Monthly rates will be the minimum needed
to provide enough revenue for continued investment and
upgrading—CA $50 per guaranteed Mb/s. That's almost as
much capacity as the traditional T-1 connection of 1.5
Mb/s, which can be as much as 10 times as expensive.
Those rates will be low enough that Internet service
providers can themselves charge customers low rates for
full Internet access, even in communities where
customers are few and far between. Though the network is
government owned, having its own revenue stream makes it
independent of unsustainable subsidies. This economic
model may prove to be SuperNet's greatest legacy, and it
may help shape the future of education, medicine,
telecommunications, and entertainment, from Fort
Vermilion to Tokyo to Helsinki.
How did a land that borders the Canadian Rockies and
the Continental Divide come to be the place that may
very well have bridged the digital divide? And how did
it manage to steer clear of the pitfall of attempting to
pick telecom winners and losers? The answer starts with
Canada's odd telecommunications past, and how it allowed
the government to pit one large carrier against another.
Telephony in Canada developed regionally—no single
national colossus emerged early in the 20th century to
dominate the industry, as happened in Europe and the
United States. Eventually, a single company, Bell
Canada, in Montreal, rose to ascendance in the eastern
provinces. In the west, a similar consolidation wasn't
complete until 1998, when the monopolies in British
Columbia and Alberta, the two richest and most populous
western provinces, merged into a single company, Telus
Corp., Burnaby, B.C. The existence of two thriving
telecom giants set the stage for SuperNet's business
plan by enabling one, Bell, to bid for and win a
contract to build a key network in the middle of a
territory dominated by the other—Telus.
Equally essential is Axia's role as operating and
access manager: it's not in Axia's interest to keep
anyone off the network, as could be the case if Bell, or
the government, controlled access. That's particularly
important because SuperNet isn't itself an Internet
service provider. Nor is it a telecommunications
provider of any sort, not even to the 1300 government
facilities that are served through a separate CA $169
million 10-year services contract between the province
and Bell.
Internet service providers operate at the highest
level of a network—Layer 7 on the standard OSI (for
Open Systems Interconnection) model of networking.
(Confusingly, it's also called the ISO model, having
been adopted by the International Organization for
Standardization.) SuperNet provides only what's
sometimes called Layer 3 access, referring to the
third-from-the-bottom level. It's more than just a
physical connection between machines, but much less than
Internet access.
The physical network resides at the bottom of the
model, Layer 1, a lifeless world of dark fiber and the
electronic devices we plug it into. The next layer up,
the data-link layer, dictates how data is routed on the
network—whether, for example, each device waits its
turn to communicate or, if they don't, how the
inevitable data collisions are adjudicated. The data can
be anything that can be digitized—telephony, cable
television, or Internet traffic. Ethernet, the protocol
SuperNet uses, is one of several possible data-link
layer protocols.
On Layer 3, information is bundled into sophisticated
packets that can be sent to specific destinations, such
as Internet addresses. This is the assembly-line world
of the Internet protocol, where routers move packets of
data like firemen of old passing buckets down the line.
The next three layers are used for error correction and
reliability, direct communication between two machines,
and encryption and data compression. Finally, at Layer
7, data emerges as something recognizable to the
telecommunications applications we all know and love the
Internet for—file transfers, e-mail, and the Web.
In effect, having the Layer 3 access that SuperNet
provides means you can send IP packets across the
Internet. A budding ISP would also need some sort of
last-mile connection to its customers—copper wire,
coaxial cable, or some sort of wireless coverage. It
would need equipment to connect to the local SuperNet
point-of-presence—3-by-4-meter shacks where customers
can attach their networks to SuperNet. (If equipment has
to be collocated—placed within the shack—an additional
charge is levied.)
Finally, an ISP needs e-mail and Web servers, to
provide those services to customers. But because
SuperNet is, in effect, one giant wide-area network,
those servers can be anywhere—back in Edmonton or
Calgary, or Tokyo, for that matter.
Internet connectivity is, in fact, the least of an
ISP's costs, but it's also the one least within an ISP's
control. Whereas there are many competing companies
offering more or less equivalent servers, routers, and
application software, often there's only one choice for
Internet access, and many small towns don't even have
that. Axia, as the access manager, actually has an
incentive to add new ISPs and other wholesale customers
to the network—its revenues increase with network traffic.
The complex partnership of SuperNet, divided as it is
among the government of Alberta, Bell, and Axia, is
essential to its success, and is distinctively Albertan.
As Axia chairman and CEO Arthur R. Price puts it:
"Government isn't in the business of being in business."
Besides that philosophy, SuperNet happened to be in
the right place at the right time: the government was
running surpluses in the go-go late 1990s. But that
money could have gone in any number of different
directions. To explain how it ended up being used to
pave over the digital divide, Grant Chaney, chief
technology officer for the province, credits his former
boss, Lorne
Taylor, who represents the Medicine Hat
area, in the province's southeast. He's now the
provincial minister for the environment, but during the
time SuperNet was hatched, Taylor headed the ministry of
innovation and science.
Taylor, a Ph.D. former professor of psychology and
part-time cattleman, has an academician's willingness to
rethink first principles and a businessman's impatience
to just get the job done. There's egotism and altruism
as well—a disconcerting way of starting with what's
right in front of his face and writing it as large as
Alberta itself.
Why, he asks, should Manyberries, a town of about 200
people, 90 km down the road from Medicine Hat, have any
less opportunity than Calgary? "In fact," he adds,
"there's no library there, no movie theater; maybe it
should have more." Even the city of Medicine Hat, a
regional center, could have better connectivity.
"Broadband would have come to Medicine Hat anyway,"
Taylor says. "But when?"
As it happens, when Taylor was ready to take on
Alberta's digital divide, the province was flush with
drilling royalties from the overheated economy of the
mid- to late 1990s. "We were lucky," Taylor says. "We
had the $193 million to invest."
SuperNet is just one aspect of Alberta's technocentric
future—the province is funding research and development
in a number of information technology areas—but it's
the part that will benefit its citizens directly. Even
the wireless sections will enjoy data rates
exponentially greater than those of many wired networks
elsewhere—155 Mb/s to start. That's enough bandwidth
for 2000 simultaneous telephone calls, or tens of
thousands of Internet customers.
In fact, the wireless portions of the network were the
greatest concern. "Back in 1997, wireless technology
wasn't as straightforward as it is today," Taylor says.
"We knew that there were areas in the province where you
couldn't run wires. We weren't sure they could be served
at all." Serving them, though, was critical—without it,
Taylor could have never gotten his legislative
colleagues to share his vision. "One of the ways I sold
SuperNet was as a rural development scheme," he says. As
it was, it took almost two years to go from concept, to
request for proposals, to legislative appropriation.
Even in 2004, SuperNet's wireless connections are no
sure thing. They require the very latest in radio
electronics and more. They are taxing Bell's civil
engineering skills, as well as those of its prime
subcontractor for the wireless legs, Morrison Hershfield
Ltd., Toronto. Nowhere is that more evident than in the
province's far northeast, where all the major
connections are wireless. And the most taxing are a pair
of wireless shots that bring the extended network to
Fort Chipewyan, a swampy region of 1400 hardy denizens
that claims to be the oldest nonnative settlement in Alberta.
Bringing Fort Chip, as people call it, into telecom's
21st century is proving to be hard for a geographical
reason: water. The swamps and streams that flow in and
out of nearby Lake Athabasca were a godsend for the
trappers who first explored and settled the area,
traveling, as they did, in bark canoes. All that water
is anything but helpful, though, to SuperNet, or to the
company that's designing and building its 3000 km of
wireless connectivity. Basically, the ground is too
soggy to efficiently install and maintain fiber in it.
Water isn't the only reason the network segment to
Fort Chip is wireless. The town lies on the edge of Wood
Buffalo National Park; construction within the park is
prohibited. Even outside the park, environmentally
sensitive marshlands are a breeding ground for sedges of
whooping cranes, herds of bison, and other threatened
species. Laying fiber is out of the question. So the
radio link into Fort Chip comes from a promontory, Birch
Mountains, 120 km away.
That 120-km wireless shot, probably the longest in
North America—and perhaps anywhere else, at its
capacity—would be a challenge even for a wired
connection. The SuperNet design calls for the long-haul
radios to be the network equivalent of a land network's
optical carrier Level 3 (OC-3) data rate of 155 Mb/s.
The radios being used for these long SuperNet
connections, from Alcatel SA, Paris, France, can handle
that speed. Unfortunately, they were designed to
transport data using the synchronous optical network
(Sonet) protocol, not the Ethernet protocol that
SuperNet uses. The two are, essentially, different
protocols operating at the second-from-the-bottom level,
the data-link layer, of the seven-layer network
hierarchy.
Sonet (or the equivalent international standard,
synchronous digital hierarchy) is the traditional
protocol for digitized telephony. It's as fundamentally
different from Ethernet as serial and parallel
electrical wiring.
The Morrison Hershfield engineers will run Ethernet on
top of Sonet at a cost of some inefficiency. The data
will first be made into packets for Sonet and then
repacketized for Ethernet. It's as if someone in your
office mailroom noticed that a bunch of letters were
destined for headquarters and packed them up, envelopes
and all, in a FedEx box. The Sonet "envelopes" would be
wasted bytes of data.
According to Morrison Hershfield electrical engineer
Jack McMullen, a bigger problem is something called
multipath fading—basically, a signal's interfering with
itself. As a radio signal travels between two antennas,
it can take multiple paths. Some go directly through the
atmosphere, others bounce up off cloud layers or down
onto wet or smooth ground surfaces, like ponds or
especially flat areas of land.
The problems are worst, McMullen says, at dawn and
dusk. The result is a distortion of the signals, or, in
the worst case, complete cancellation. Think of, say, a
rock concert in a sports arena. Sometimes you can hear
the music twice as it fills the hall, once from the
front, then a moment later from the back. If you sit at
exactly the right spot, the two can even effectively
cancel one another out—resulting in a dead spot where
you can hardly hear anything.
The problem is especially great at higher frequencies;
lower frequencies are less prone to severe multipath
fading. So the Morrison Hershfield design engineers can
step down from the 8-GHz band to 6 GHz, which they've
already done for the Fort Chip shot. They can even go
down to the 2.1-GHz band (all three are frequencies for
which SuperNet already has licenses), but doing so would
also mean lowering the data rate to 45 Mb/s. That's a
huge decrease, 70 percent, making it the solution of
last resort.
The engineers' mathematical model of the radio
signals' 120-km path from Birch Mountain to Fort Chip is
part science, part art, and part educated guesswork,
based as much on topographical maps and field surveys as
on device specs and discussions with their counterparts
at Alcatel. The winter installation clock is ticking, so
in late November they stopped their calculating and were
ready to start building.
The benefits that Fort Chipewyan will soon gain are
already being enjoyed in Fort Vermilion, in the
northwest corner of the province. There, an archipelago
of SuperNet is already up and running, self-contained,
unconnected to the rest of the network until later this
year. Pam Martin and her colleagues there are already
teaching their multiple-location math and other classes
to schoolrooms connected by optical fiber, some of which
had been put in the ground several years ago by Telus,
the incumbent phone company. Telus never used it, and
sold it to SuperNet in 2002.
The most important job of a telecommunications network
is to collapse distances. So SuperNet could hardly come
to a more apt location—at 250 000
km2, Fort Vermilion is one of
the largest, most thinly populated school districts in
North America—the size of five Denmarks, says Ken
Dropko, the division's superintendent. It takes three
hours or more to drive from the mostly aboriginal and
mixed-immigrant communities of the northwest to the
Mennonite settlements in the southeast.
Before SuperNet, the only way to collapse distances
was by ordinary telephone. As recently as last spring,
Martin was trying to teach her advanced high school math
classes remotely, without the benefit of eye contact, by
audio-only conference calling. "It didn't really work,"
she says. "I had no idea what the students did and
didn't understand, or even if they were paying
attention. I found out once that two kids had been
playing chess."
While not the first school division to be
"SuperNetted," Fort Vermilion is the first to multicast
classes—teaching two or more remote schools at the same
time. Superintendent Dropko can't wait to be connected
to the rest of SuperNet. "We're arranging with the
University of Alberta to have some courses for our
teachers," he says. "And we want to expand our
apprentice welding program. Right now, we pair them up
with experienced welders for the practical part of their
apprenticeship. But then they have to go to Edmonton for
the theory. Many of them don't do well. They're off in
the big city, all alone. The First Nations kids have it
especially hard—theirs are very family-oriented
cultures. We think we can do the theory part with SuperNet."
There's also the matter of a relatively new regulation
requiring that schools make a variety of second
languages available to students. Besides French, which
is Canada's official second language, that might include
German, for the Mennonite families who want their
children to learn it. "Or Spanish," Dropko says—there
are Mennonites in Bolivia who have been re-emigrating to
the area. With SuperNet, the district's Spanish teachers
could be in Edmonton—or Bolivia.
Distance learning mainly flows from the large to the
small. Martin's math class, which is sent from High
Level, a town of about 4000, to Fort Vermilion and three
even smaller schools, is typical. Occasionally, though,
it goes the other way. In another school division, in
central Alberta, a forestry class is taught to kids in
the relatively large city of Red Deer (population: 68
000) from the small town of Rocky Mountain House,
one-tenth its size. Though the towns are only 85 km
apart, before the course the kids in the "big" city knew
almost nothing about "Crown [state-owned] forests"—in
fact, most hadn't even heard that phrase before.
A mathematical model of the radio signals' 120-km
path is Part Science, Part Art, and Part Educated
Guesswork
It's hubris, or worse, to think that large cities have
nothing to learn from rural areas. New Yorkers, for
example, grow up thinking they live near the best
dinosaur museum in the world, the American Museum of
Natural History. But that distinction might very well go
to the kids in Drumheller, about 140 km east of Calgary,
home of the Royal Tyrrell Museum. Built on the site of
many of North America's most significant dinosaur
excavations, the museum is a marvel, and it will be on
SuperNet early next year.
When that happens, schoolchildren throughout Alberta
will eventually be able to tour the museum online,
gaping remotely at its bone-plated stegosaurus,
terrifying tyrannosaurus, and equally fearsome
home-grown albertosaurus. Schoolchildren in New York,
though, won't have the bandwidth. New York needs a
SuperNet as much as Alberta does. We all do.