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Power Line Communication
(PLC)
Hess Guillaume
IUP 1 – 2004/2005 29/04/05
Power Line Communication
● global technology
Summary
● outdoor network
● indoor network
● Standards for PLC
● Advantages, disadvantages
● PLC in the world
Power Line Communication
● to transmit numerical information on the 230 Volts sector network
Technology
● a coupler eliminates the low frequencies components
● each electrical connector becomes an Ethernet point
Power Line Communication
● electric charge changes 100 times a second
Technology
● wave electromagnetic
● shortest, identified by frequencies : data transfer network
● adapter PLC: modem emitting a breath
● code comparable with the Morse
Power Line Communication
● only the highest frequencies make it possible to transport the data effectively
Technology
● ADSL -> PLC : simultaneous division and emission data on various channels
Power Line Communication
● maximum outdistance indoor/outdoor : 200-300 m
Technology
● network PLC surer than a WiFi network
● all equipment PLC has a MAC address
Power Line CommunicationOutdoor
● on the low tension part of the energy distribution network
● all buildings connected to the same district transformer
● a modem injects signal PLC
● a modem transposes signal PLC
Power Line CommunicationOutdoor
● "outdoor": from transformer to the residence
● coupling a high flow arrival Internet with PLC network
● IP supply level network :
- arrival of access high flow at the transformer : the supplier of access
- implementation for routing IP : IP service provider
● electrical supply level network : coupling at the transformer HT/LT
Power Line CommunicationIndoor
● an Internet connection is already available
● cases PLC : - Ethernet or USB port
- connection towards the electrical connector
Power Line CommunicationIndoor
● to extend an Ethernet network
● to share high flow access Internet
● network PLC: type Ethernet 802.3
● standard : Homeplug
● theoric flow : 14 Mb/s
● cost : 100 to 140 euros the simple adapter
Power Line CommunicationStandards
● no specific standard for the moment in Europe
● only one American standard: Homeplug V1.0.1, concerning only “Indoor”
● sectors touched by the PLC :
- electricity
- telecommunications
- electromagnetic compatibility
- the management of the frequency plan
● problems of standardization
Power Line CommunicationStandards
● the PLC apparatuses in France must have marking CE
● different use of the frequencies for each country from the UE
● to remain between 1,6 and 30 MHz
● level of emission lower than 90 dB
Power Line CommunicationStandards
● filters to protect the “prohibited” frequencies
● not disturb the radio transmissions and the services existing on the frequency band
Power Line CommunicationAdvantag
es
● progressiveness and flexibility
● saving in wiring
● simplicity
● complementarity
● outdoor: possibility of bringing high-flow Internet accesses for the cities without ADSL
● mobility
Power Line CommunicationDisadvantag
es
● range of the system
● price of the equipment in indoor
● tributary of the state and the architecture of electric wiring
● divided band-width
● cost of the outdoor installation
● no European standard
● complex implementation in outdoor
Power Line CommunicationIn the
world
● more experiments than marketing
● 60 experiments in progress in 26 countries
● 12 tests of marketing
Power Line Communication
Thanks for your
attention
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