HD-PLC

HD-PLC (short for High Definition Power Line Communication) is one of the wired communication technologies. It adopts high frequency band (2 MHz~28 MHz) over mediums like powerlines, phone lines, twisted-pair, and coaxial cables. It is the IEEE 1901-based standard. [1]

HD-PLC
International standardIEEE 1901
Developed byPanasonic Corporation
IndustryHVAC
Building Automation
Energy Management
Smart Home
Industrial
Public infrastructure
IoT

Specification and features

There are essentially two different types of HD-PLC: HD-PLC Complete and HD-PLC Multi-hop. They are incompatible.

HD-PLC Complete

Source:[2]

This is for high speed applications such as TV, AV, and surveillance cameras.

The major technical features include:

  • IEEE 1901 full compliant
  • QoS by the priority control
  • CSMA/CA and DVTP(Dynamic Virtual Token Passing) supported
  • Concurrent multi-AV stream, VoIP, and file transfer and file transfer supported using IP packet classification
  • Multi-network access at priority CSMA/CA with network synchronization

HD-PLC Multi-hop

Source:[3]

This is for long-distance applications such as smart meter, building network, factory, energy management, and IoT devices.

The major technical features include:

  • ITU-T G.9905 multihop technology

Common features

Source:[4]

  • Uplinking/downlinking through 432 of 26 MHz (between 1.8 MHz and 28 MHz) bandwidth subcarriers with Wavelet OFDM
  • Maximum 240 Mbit/s PHY rate
  • Multilevel modulation for each subcarrier which suits the properties of the power line transmission channel and allows for the best transmission speed
  • Subcarrier masking with the arbitrary number which can comply with the rules in each country
  • Forward error correction (FEC) which enables effective frame transmission
  • Channel estimation launch system with change detector for cycle and transmission channel
  • HD-PLC network bridging compatible to Ethernet address system
  • Advanced encryption with 128 bit AES

4th-generation HD-PLC (HD-PLC Quatro Core technology)

Source:[5]

We now come to communication speed issues like high-definition video images (4K/8K) or in some cases multi hop technology is not enough to reach an isolated and distant PLC terminal. HD-PLC Quatro Core has been designed to solve these problems. This technology is an improvement on the conventional HD-PLC in both communication distance and speed. It achieves to double conventional HD-PLC's communication distance by adopting a communication band of 1/2 or 1/4 of conventional HD-PLC band and achieves to offer a maximum physical line transmission rate of 1 Gbit/s by using an expanded communication band 2 or 4 times the conventional HD-PLC band.

This evolution of the standard therefore offers either an extended range in a larger building, at the cost of a lower data rate, or a higher data rate, but achievable over shorter distances than in the previous version of the standard.

Use cases

There are a few strengths of using HD-PLC technology on existing wires.[6]

  • Expectable higher speed performance
  • Cost reduction on network construction by existed infrastructure
  • Support the area where the radio waves is difficult to be reached
  • Wire saving by sharing power lines and communication lines

Typical use case include:

  • HVAC systems[7][8]
  • Building Automation[9][10]
  • PV panel
  • Smart meter
  • Street light
  • Surveillance camera system
  • Video entry system
  • Tunnel[11]
  • Robot wire saving[12]

See also

References
  1. HD-PLC TECHNOLOGY
  2. "特集PLC(電力線通信)". 電気総合誌OHM. 2020年7月号.
  3. "Installation and operation of Long Range "HD-PLC" multi-hop" (PDF).
  4. HD-PLC TECHNOLOGY
  5. 4th-generation HD-PLC Quatro Core Overview
  6. HD-PLC Use Cases
  7. Navid, Michael V. "HD-PLC Technology: A New Communication Standard Enabling Future Smart HVAC Systems In Smart Buildings". www.hvacinformed.com. Retrieved 2020-07-30.
  8. "HD-PLC Technology: A New Communication Standard Enabling Future Smart HVAC Systems In Smart Buildings". LonMark. 2020-07-06. Retrieved 2020-07-30.
  9. "Smart Building Network Based on HD-PLC". www.megachips.com. 15 March 2018. Retrieved 2020-07-30.
  10. "High-Speed Powerline Channel Earns ANSI/CTA Approval". LonMark. 2020-01-05. Retrieved 2020-07-30.
  11. "新長崎トンネル | 納入事例集 | 電気・建築設備 | Panasonic". www2.panasonic.biz. Retrieved 2020-07-30.
  12. "[DAIHEN] 新型大気用ウエハ搬送ロボット UTX/W-RM5700 - YouTube". www.youtube.com. Retrieved 2020-07-30.
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