PLT TECHNOLOGY AND STANDARDS

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PLT TECHNOLOGY AND STANDARDS
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TECHNICAL OVERVIEW
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POWERLINE COMMITTEE (PLT) DESCRIPTION

• ETSI TC PLT (excerpt from ToR)
• ... develop high quality standards and
  specifications to provide telecommunications
  services via the existing public and private
  mains power networks
• ... The standards will be developed in
  sufficient detail to allow interoperability
  between equipment from different manufacturers
  and co-existence of multiple powerline systems
  within the same environment
• ETSI TC PLT is publishing and developing the
  necessary standards to make sure that PLT
  successfully coexists with other technologies and
  services

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COMMITTEE DESCRIPTION

• A.S.P., ALCATEL S.A., BBC, BMWi, CHTTL, Cisco
  Systems Belgium, CONEXANT SYSTEMS SAS, Deutscher
  Amateur Radio Club, DS2, DTI, ECCA, EDF, FED.
  MINISTRY FOR TRANSPORT, FICORA, France Telecom,
  IAEI, ICP-ANACOM, INTEL CORPORATION SARL,
  INTELLON Corporation, LEA, MEDTRONIC BAKKEN
  RESEARCH, MINISTERO DELLE COMUNICAZIONI, NITA,
  NOKIA Corporation, Norwegian P T Authority,
  NOZEMA, OFCOM, Ofcom (U.K.), PHILIPS
  Semiconductors, PORTUGAL TELECOM SGPS SA, Power
  PLUS Communications, Radio Frequency
  Investigation, SAGEM Group, Schmid Telecom AG,
  Schneider Electric Powerline, SONY INTERNATIONAL
  (EUROPE), Spidcom Technologies SA, TDF, TELECOM
  ITALIA S.p.A., TELEFONICA S.A., TELKOM SA
  LIMITED, TOSHIBA Electronics Europe, UTIMACO
  SAFEWARE AG, VACUUMSCHMELZE GmbH

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SOME STANDARDS

• ETSI Technical Specification (TS) 101 896
  Reference Network Architecture Model
• The present document specifies the network
  architecture model for PLC (powerline
  communication) systems. The document defines and
  specifies all PLC external interfaces. PLC
  internal interfaces are defined within the
  document but (if the interfaces are new
  standards) specified in other documents to which
  references are given.

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SOME STANDARDS

• ETSI Technical Specification (TS) 101 867
  Coexistence of Access and In-House Powerline
  Systems
• When using the same frequencies, inhouse PLC is
  visible in the access and might potentially
  interfere with access PLC. The same situation
  appears also vice versa as powerlines are a
  shared medium. Therefore it is essential to
  specify the co-existence between access and
  inhouse to protect each service from interference
  by the other

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SOME STANDARDS

• ETSI Technical Report (TR) 102 049 Quality of
  Service (QoS) requirements for in-house systems
• The present document contains a definition of
  Quality of Service (QoS) parameters and QoS
  requirements for an in-house PowerLine
  Communications (PLC) network system needed for
  applications in the home environment (HE). Such a
  system is here called a PLC home network
  (PLC-HN). Input to the present document came from
  company
• contributions and from ETSI,
• IEEE, IETF, and ITU-T standards
• documents. The QoS
• requirements and definitions are
• derived from well-known and
• industry wide accepted standards.

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SOME STANDARDS

• ETSI Technical Report (TR) 102 175 PLT Channel
  characterization and measurement methods
• The present document applies to measurements of
  the symmetry behaviour and the attenuation in Low
  Voltage Distribution Networks (LVDN) within
  premises. It also covers measurements for
  magnetic near fields within and in close vicinity
  of premises resulting from feeding HF-signals
  into LVDN. The measurements are intended for the
  measurement campaign of the ETSI Specialist Task
  Force (STF) 222, which investigates HF
  characteristics of LVDN relevant for the
  operation of PLT-systems as well as the hidden
  node aspect

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SOME STANDARDS

• ETSI TR 102 258 PLT LCL Review Statistical
  Analysis
• EU PLT LCL Review Statistical Analysis taking
  into account such matters as Earthing Variations,
  Country Variations, Operator differences, phasing
  and distribution topologies, domestic, industrial
  and housing types along with local network
  loading
• 80 percentile value 30.7 dB
• Basically independent of frequency, geographical
  area and electrical installation type

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SOME STANDARDS

• ETSI TR 102 259 PLT EMI Review Statistical
  Analysis
• EU PLT EMI Review Statistical Analysis taking
  into account such matters as Earthing Variations,
  Country Variations, Operator differences, phasing
  and distribution topologies, domestic, industrial
  and housing types along with local network
  loading
• 80 percentile value of the coupling factor
  63.16 dB(µV/m)-dBm
• Basically independent of frequency, geographical
  area and electrical installation type

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SOME STANDARDS

• ETSI TR 102 324 Radiated emissions'
  characteristics and measurement method of state
  of the art powerline communication networks
• The present document also specifies the
  measurement method used to characterize the
  radiated emissions, so that future measurements
  can be performed using the same method.
• The present document reports the radiated
  emissions' characteristics of powerline
  communication networks in the frequency range
  1,605 MHz to 30 MHz.
• The radiated emissions' characteristics presented
  in the present document cover both access and
  in-home powerline communication networks.
• 80 of the measurements are below 4 dB(µA/m)
  quasi-peak, while 100 are below 14 dB(µA/m)
  quasi-peak)

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SOME STANDARDS

• ETSI TR 102 269 Hidden Node review and
  statistical analysis
• The present document investigates the
  distribution of the Transverse Transfer Loss with
  respect to the carrier-frequency, to the relative
  location of the sockets, to the phase conditions
  between the sockets and to the national
  LVDN-particularities.

Cumulative probability for the largest continuous
window with TTL below k same flat/house
k 10 dB (red), 20d B (green), 30 dB (blue), 40
dB (violet), 50 dB (dark blue), 60 dB (brown), 70
dB (grey), 80 dB (black)
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SOME FUTURE STANDARDS

• Work Item 5 In-house/In-house Coexistence
• Target deliverable type ETSI Technical
  Specification
• Methodology allowing multiple In-house systems to
  co-exist in the same network
• Work Item 7 Detailed Architecture and Protocols
• PLC network reference architecture PHY layer
  aspects, MAC layer, convergence layers QoS
  mechanisms, etc...

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SOME FUTURE STANDARDS

• Work Item 9 Programmable PSD mask
• Target deliverable type ETSI Technical
  Specification
• POWER BACK-OFF
• NOTCHES
• MITIGATION TECHNIQUES
• Work Item 10 Dynamical frequency allocation for
  Access/In-House coexistence

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GLOBALIZATION ASPECTS (i)

• COLLABORATING WITH INTERNATIONAL FORA AND
  CONSORTIA
• CONTRIBUTING
• LIASING
• PLT IS RAPIDELY GAINING ORGANISATIONAL ACTIVITY
  WORLDWIDE
• USA (IEEE, HOMEPLUG, UPLC, PLCA)
• EUROPE (ETSI, PLCforum, PUA, CENELEC)
• JAPAN (JAPANESE PROMOTERS ALLIANCE)
• ...

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GLOBALIZATION ASPECTS (ii)
NSOs
EC
CENELEC/ETSI JWG EMC
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GLOBALIZATION ASPECTS (iii)
CENELEC/ETSI JTF Coex
NSOs
CEC DG ENTR.
IEC CISPR
CEPT SE35
CENELEC/ETSI JWG EMC
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THANK YOU

• More information at
• On PLT http//portal.etsi.org/plt
• On interop www.etsi.org/plugtests