Powerline Communications Networking
Broadband over Power Line
Power Line Communication
Broadband Power Line
Powerline Communications : Broadband Powerline
Power Line Network Primer
What is powerline communications?
How does powerline communications
Is powerline communications
a new technology?
What are PLC advantages?
Powerlines carry signals for long distances without
requiring regeneration. Their near light speed propagation makes
them very powerful for fast delivery of video and audio data. There
is no topology limitation for powerlines.
High transmission rate, right now 3 mbps in uploading
and downloading. Sumitomo Electric Industries, Ltd. developed high
speed PLC modems, whose data transmission rate is 45 mbps, several
times higher than ADSL. The data transmission rate is expected up
to 200 mbps in the future by improving the PLC chip.
Permanent on-line connection with the potential
for lower charges.
No need for complicated wiring and additional
installations. Move your computers and appliances where you want.
Lower investment costs compared to those envisaged
for other broadband data access systems.
Electric companies could offer a broader bundle
of services then telecom providers.
What are PLC weaknesses?
Data signal disruption due to noise interference
and signal loss over longer distances.
Problems with bypassing transformers.
From a market perspective, powerline networking
technology faces potentially serious competition from wireless local
area network (WLAN) solutions.
Providers would still need to come up with with
a last mile solution for hooking up individual subscribers
to the neighborhood transformer. That connection could be through
cable or phone lines, or wireless.
Powerline's maximum access speed is shared with
all users connected to the same local network station. The more
people that are simultaneously on the Internet, the lower the speed
The technology is still in the developmental
Who is testing or has
tested the technology?
Users in Germany include the electricity companies
RWE Energie Essen and EnBW Energie Baden-Württemberg, while
in Spain the energy and telecoms group Endesa uses PLC technology.
Lina.Net of Iceland, a subsidiary of Reykjavik Energy, has recently
begun introducing PLC technology with the declared objective of
providing private households with fast Internet access over the
power grid rather than the telephone network. In Sweden Sydkraft,
one of the leading energy providers in Scandinavia, uses PLC for
bridging the last mile as well as for networking inside buildings.
PLC in USA
Powerline Technologies in Reston, Virginia, is
trying out its system with two utilities in the East and one in
the Midwest. Earlier last year, the company finished initial PLT
tests in suburban Atlanta, where a handful of households accessed
the Net through a specially designed modem that can hit speeds greater
than 1.5 mbps.
Owing to recent advances for PLC in Europe, and
the efforts of a handful of U.S. PLC vendors including one
backed by American Electric Power (AEP), PLC is closer to being
a commercial reality in the U.S. than ever before. Beta tests scheduled
by each of these firms over the next 12 months will be crucial to
resolving outstanding technical hurdles, standardizing equipment
and deployment techniques, and building interest and partnerships
What application areas
are offered by powerline communications?
Last December Intellon announced its PowerPacketTM
powerline networking chipset, the first product certified as compliant
with the HPAs 1.0 Specification introduced earlier that year.
The chipset allows users to access the Internet and connect computers
and other devices at speeds up to 14 mbps by simply plugging into
power outlets throughout a home or small office.
Appliance makers like Samsung Electronics Co.
have been solidifying cooperation with their technology partners
to enable them to market Internet-controllable home appliances this
year. Samsung plans to set up a Dream LG site on its
homepage to advertise its Internet-enabled products to potential
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