Download - BPL_Vibhor_Raut_Patil
It’s an emerging technology.
The newest heavy hitter in the competitive world of broadband service.
It offers high-speed access.
Broadband over Power Lines (BPL) is also
known as Power line communication , power line carrier (PLC),Power line Digital Subscriber Line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN).
Coaxial cable: Cable tv get a high speed
connection to the internet.
Performance does not depend on distance
from central cable office.
Disadvantage of sharing the bandwidth
involved in it.
Wireless: Send and receive data from any
location within signal reach of an access
point.
Broadband over Power Line (BPL) is a
technology that allows voice and Internet
data to be transmitted over utility power
lines.
It is an access solution that transmits data
over electricity wiring.
In-House BPL : Electrical wiring is to
network computers and devices within
in a buildings.
Access BPL : It is a technology that
provides broadband access over
medium voltage power lines.
The idea is not new.
Electric companies have used this
technology for years to monitor the
performance of power grids.
The transmission speed was slow.
Most BPL systems are designed to
operate in the frequency spectrum from
1.705 to 30 MHz, but occasionally up to 80
MHz, using MV and LV power distribution
network lines.
POWERLINE
INFRASTRUCTURE
In addition to
lines, power
grids use
generators
substations
transformers
and other
distributors
that carry
electricity from
the power
plant all the
way to a plug
in the wall.
Access BPL equipment consists of:
Injectors: BPL signals may be injected onto MV power lines with the injectors.
Extractors: Provide interface between the medium power lines & the customers. BPL extractors are usually located at each LV distribution transformer feeding a group of homes
Repeaters: For long runs of MV power lines, repeaters are employed to maintain the required signal strength.
The last mile is the final step that carries Internet into the subscriber's home or office.
In the various approaches to last-mile solutions for BPL, some companies carry the signal in with the electricity on the power line, while others put wireless links on the poles and send the data wirelessly into homes.
BPL MODEM The signal is received by a
power line modem that
plugs into the wall.
BPL modems use silicon
chipsets specially designed
to handle the work load of
pulling data out of an
electric current.
BPL modem has roughly
the size of a common
power adapter.
It plugs into a common
wall socket, and an
Ethernet cable running to
your computer finishes the
connection
High Speed Internet Access to Rural areas
as well.
Upload speed that’s as fast as your
download speed
Flexible of modification
Simplicity of installation
There would be no need to build a new infrastructure. Anywhere there is electricity there could be broadband. So cheaper.
Secure data-encryption:The signals are not in the air where neighbours or others could potentially snoop your service. Powerline adapters are sold with encryption turned on . Secured network through a simple password-setting process .
Improves the competitiveness of the
market for broadband services.
One wire offers both power and your high-
speed communications needs.
Broadband Services
High Speed Internet Access Voice Over IP Video Streaming Home Networking Home AutomationHome Security Systems Telemedicine Applications
Interference issue: The system is expected to use frequencies of 1 to 30 MHZ which has been used by radio operators. Power lines are shielded & have potential to interfere with radio communications.
Harmonics & Intermodulation: The interference caused by BPL harmonics is not reduced even if the fundamental frequency is notched. Intermodulation products are frequently encountered in power lines at bad joints, which readily produce mixing.
Noise: The power lines are inherently a very noisy environment. Every time a device turns on or off, it introduces a pop or click into the line.
BPL signals cannot readily pass through transformers, as their high inductance makes them act as low-pass filters.
The system is based on shared bandwidth, in part due to the tree design of theinfrastructure.
Product
Feature
Dial
up
ADSL BPL Customer Benefit
Speed Slow Fast Faster Saves time
Convenient
access
No No Yes Convenience, available through virtually all
power points
Cost Cheap Expensive Cheap Cost effective service
Phone/data
cabling
required
Yes Yes No No added costs – no expensive in-house
data cabling required or expensive wireless
router
Access to the
Internet
Yes Yes Yes Web browsing
VoIP phone
access
included
No No Yes Cost savings
Integrated
Internet and
VoIP
No No Yes Ease of use and cost savings
Always on No Yes Yes Convenience
Cheap VoIP
calls
No No Yes Cost savings, no additional hardware or
software required
Suitable for
video
No Some higher
speeds
Yes Value for money, fun to use
COMPARISON
•BPL has been considered as a potential 3rd wire that can compete with cable & DSL internet services .
•Electrical power lines offer a clear benefit ,but it is important to remember that BPL provisioning does not come without the additional infrastructure costs.
• As required, further refinements will be made to BPL technologies to enable them to reduce harmful emissions.