Inter operatibility for Microwave Access
recent years, Broadband technology has rapidly become an established, global commodity
required by a high percentage of the population. The demand has risen rapidly,
with a worldwide installed base of 57 million lines in 2002 rising to an estimated
80 million lines by the end of 2003. This healthy growth curve is expected to
continue steadily over the next few years and reach the 200 million mark by 2006.
DSL operators, who initially focused their deployments in densely-populated urban
and metropolitan areas, are now challenged to provide broadband services in suburban
and rural areas where new markets are quickly taking root. Governments are prioritizing
broadband as a key political objective for all citizens to overcome the "broadband
gap" also known as "digital divide".
DSL (WDSL) offers an effective, complementary solution to wireline DSL, allowing
DSL operators to provide broadband service to additional areas and populations
that would otherwise find themselves outside the broadband loop. Government regulatory
bodies are realizing the inherent worth in wireless technologies as a means for
solving digital-divide challenges in the last mile and have accordingly initiated
a deregulation process in recent years for both licensed and unlicensed bands
to support this application. Recent technological advancements and the formation
of a global standard and interoperability forum - WiMAX, set the stage for WDSL
to take a significant role in the broadband market. Revenues from services delivered
via Broadband Wireless Access have already reached $323 million and are expected
to jump to $1.75 billion.
There are several
ways to get a fast Internet connection to the middle of nowhere. Until not too
long ago, the only answer would have been "cable" - that is, laying
lines. Cable TV companies, who would be the ones to do this, had been weighing
the costs and benefits. However this would have taken years for the investment
to pay off. So while cable companies might be leading the market for broadband
access to most people (of the 41% of Americans who have high-speed Internet access,
almost two-thirds get it from their cable company), they don't do as well to rural
areas. And governments that try to require cable companies to lay the wires find
themselves battling to force the companies to take new customers. Would DSL be
a means of achieving this requisite of broadband and bridging the digital divide?
lines are already there, but the equipment wasn't always the latest and greatest,
even then. Sending voice was not a matter of big concern, but upgrading the system
to handle DSL would mean upgrading the central offices that would have to handle
the data coming from all those farms. The most rattling affair is that there are
plenty of places in cities that can't handle DSL, let alone the countryside. Despite
this, we'll still read about new projects to lay cable out to smaller communities,
either by phone companies, cable companies, or someone else. Is this a waste of
money? Probably because cables are on their way out. Another way to get broadband
to rural communities is the way many folks get their TV: satellite, which offers
download speeds of about 500 Kbps -faster than a modem, but at best half as fast
as DSL - through a satellite dish. But you really, really have to want it. The
system costs $600 to start, then $60 a month by the services provided by DIRECWAY
in the US.
There are other
wireless ways to get broadband access.
("Microwave Communications Inc.") was originally formed to compete with
AT & T by using microwave towers to transmit voice signals across the US.
Unlike a radio (or a Wi-Fi connection), those towers send the signal in a straight
line -unidirectional instead of omni directional. That's sometimes called fixed
wireless or point-to-point wireless. One popular standard for this is called LMDS:
local multipoint distribution system. Two buildings up to several miles apart
would have microwave antennas pointing at each other.
delivers broadband to a large area via towers, just like cell phones. This enables
your laptop to have high-speed access in any of the hot spots. Instead of yet
another cable coming to your home, there would be yet another antenna on the cell-phone
tower. This is definitely a point towards broadband service in rural areas.
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