Broadband PLC for Smart Communication …...Broadband PLC for Smart Communication Infrastructure 1...
Transcript of Broadband PLC for Smart Communication …...Broadband PLC for Smart Communication Infrastructure 1...
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Broadband PLC for Smart Communication
Infrastructure
2014/12/15 1
December 10th 2014
Kyushu Institute of Technology Mikio Mizutani
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1.Introduction
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PLC is used for Home-Network
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Nature of Power Line Communication # No new wiring=Power Line is ubiquitous # Connect to Power Supply Network # Over 100Mbps capability available PLC application & required rate # Router to PC 100Mbps required # Router to TV (Broadcast) 24Mbps necessary # Router to Telephone less than 100mS delay # Smart Meter to HEMS-GW 1kbytes/minute # Auto-Meter-Reading 100bytes/month
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PLC applications
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Internet
Smart Meter
Gas
Water
Fiber Cable
Appliances
Battery
DC to AC
Pow
er L
ine
EV
Router
Ethernet PLC
Power Control RS232C PLC
RS232C PLC
RS232C PLC
Ethernet PLC
Ethernet PLC
Ethernet PLC
Ethernet PLC
RS232C PLC
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2.Physical layer of PLC & Noise/Attenuation
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Doctoral dissertations of Mikio Mizutani ;Kyushu Institute of Technology 2014 ‘Studies on Reinforcement of Power Line Communications on Home Networks’
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PLC-standards in Japan
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Broad-band PLC:BPLC≒120Mbps Narrow-band PLC:NPLC≒30kbps
BPLC-standard IEEE1901,ITU-T G.9972 (2011) Application in Japan is limited to use only in-house NPLC-standard IEEE1901.2,ITU-T G.9903-ARIB(2014) TEPCO start to use for Smart-Meter from 2015 Spring
AC-line noise
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OFDM Modulation is better for wideband
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In deeply-notched-spectrum-line, OFDM is less damaged than Single-Carrier system.
OFDM Single-Carrier-PSK
Line spectrum
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Typical Line-Attenuation is Low-Pass in high rise housing vertical cable.
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1st 2nd 3rd 4th
Observed line attenuation 1st to 4th
Simulated line attenuation Total line attenuation 1st to 4th
25mm2 cable model + LED-bulb
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Diode bridge noise is limit under 10kHz.
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Diode bridge in power-supply
Noise wave of Diode bridge
Diode bridge has no damage for NPLC
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Over 150kHz noise has damages for NPLC
Equipment with dimmer has over 150kHz noise.
Japan regulation of AC-noise Noise of KOTATSU with dimmer
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IH-noise is burst in every 20mS cause error in NPLC.
IH-cooking-heater power-supply-burst-noise exceed 150kHz.
IH-cooking-heater-Noise
Display of G3plc_monitor By Egretcom
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Impedance up/down by 50Hz
Wave of Impedance up/down Packet-error-ratio vs. 0-cross of 50Hz
Error ratio
Packet-error-ratio varies from 0% to 100% depend on AC-wave zero-cross timing.
0 0.005 0.01 0.015 0.02-0.02
-0.015
-0.01
-0.005
0
0.005
0.01
0.015
0.02
時間[sec]
電圧
[V]
50Hz*2
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3. G3PLC & real environment
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FCH-no-error EQM=0
G3PLC-ARIB frame in real environment-1. no-ATT & no-noise
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FCH-no-error EQM=294
G3PLC-ARIB frame in real environment-2. Flat-ATT 55dB=SN 0dB
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FCH-no-error EQM=582
G3PLC-ARIB frame in real environment-3. Line=180kHz low-pass
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FCH-FCS-error EQM=759.
G3PLC-ARIB frame in real environment-4. IH-cooking-heater-burst-noise
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4. HD-PLC performance issue
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Mikio Mizutani, Masato Tsuru, Yuji Oie, “New Performance Estimation Scheme and Applications for Broadband Communications Over Power Lines in the Home,” Proc. 2011 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM2011), pp. 578-583, August 2011.
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Panasonic PLC house in Minoshima
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Number of outlets is 84
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Observed UDP-rate in PLC house
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UDP-rate vs. Attenuation in each 13 pairs of outlet
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UDP rate Estimation of every outlet pairs
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Attenuation estimation by BMAE Estimated UDP rate of every outlet pairs
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UDP rate up by relay transmission
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Rate up criteria Sac>Sab*2 & Scb>Sab*2
UDP rate up by relay transmission RED: no improve Blue: Rate up
Relay transmission improve UDP rate. 100% up-12Mbps :95% up-20Mbps : 90% up-24Mbps
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Thanks your corporation
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