Broadband PLC for Smart Communication Infrastructure
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1 Broadband PLC for Smart Communication Infrastructure Kyushu Institute of Technology Mikio Mizutani December 10th
2 1.Introduction 2
3 PLC is used for Home-Network 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 3
4 PLC applications Internet Fiber Cable Smart Meter Router RS232C PLC Ethernet PLC Ethernet PLC Appliances Power Line RS232C PLC Ethernet PLC DC to AC Power Control RS232C PLC Ethernet PLC Battery Gas Water RS232C PLC Ethernet PLC EV 4
5 2.Physical layer of PLC & Noise/Attenuation Doctoral dissertations of Mikio Mizutani ;Kyushu Institute of Technology 2014 Studies on Reinforcement of Power Line Communications on Home Networks 5
6 PLC-standards in Japan Broad-band PLC:BPLC 120Mbps Narrow-band PLC:NPLC 30kbps AC-line noise 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 6
7 OFDM Modulation is better for wideband Line spectrum Single-Carrier-PSK OFDM In deeply-notched-spectrum-line, OFDM is less damaged than Single-Carrier system. 7
8 Typical Line-Attenuation is Low-Pass in high rise housing vertical cable. 25mm2 cable model + LED-bulb Observed line attenuation 1st to 4th 1st 2nd 3rd 4th Total line attenuation 1st to 4th Simulated line attenuation 8
9 Diode bridge noise is limit under 10kHz. Diode bridge in power-supply Noise wave of Diode bridge Diode bridge has no damage for NPLC 9
10 Equipment with dimmer has over 150kHz noise. Japan regulation of AC-noise Noise of KOTATSU with dimmer Over 150kHz noise has damages for NPLC 10
11 IH-cooking-heater power-supply-burst-noise exceed 150kHz. Display of G3plc_monitor By Egretcom IH-cooking-heater-Noise IH-noise is burst in every 20mS cause error in NPLC. 11
![Impedance up/down by 50Hz 電圧 [V] 0.02 0.015 0.01 0.005 0-0.005-0.01-0.015 50Hz*2 Error ratio -0.02 0 0.005 0.01 0.015 0.02 時間 [sec] Wave of Impedance up/down Packet-error-ratio vs.](/docs-images/88/116942304/images/12-2.jpg "0-cross of 50Hz Packet-error-ratio varies from 0% to 100% depend on AC-wave zero-cross timing. 12")
12 Impedance up/down by 50Hz 電圧 [V] Hz*2 Error ratio 時間 [sec] Wave of Impedance up/down Packet-error-ratio vs. 0-cross of 50Hz Packet-error-ratio varies from 0% to 100% depend on AC-wave zero-cross timing. 12
13 3. G3PLC & real environment 13
14 G3PLC-ARIB frame in real environment-1. no-att & no-noise FCH-no-error EQM=0 14
15 G3PLC-ARIB frame in real environment-2. Flat-ATT 55dB=SN 0dB FCH-no-error EQM=294 15
16 G3PLC-ARIB frame in real environment-3. Line=180kHz low-pass FCH-no-error EQM=582 16
17 G3PLC-ARIB frame in real environment-4. IH-cooking-heater-burst-noise FCH-FCS-error EQM=
18 4. HD-PLC performance issue Mikio Mizutani, Masato Tsuru, Yuji Oie, New Performance Estimation Scheme and Applications for Broadband Communications Over Power Lines in the Home, Proc IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM2011), pp , August
19 Panasonic PLC house in Minoshima Number of outlets is 84 19
20 Observed UDP-rate in PLC house UDP-rate vs. Attenuation in each 13 pairs of outlet 20
21 UDP rate Estimation of every outlet pairs Attenuation estimation by BMAE Estimated UDP rate of every outlet pairs 21
22 UDP rate up by relay transmission 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 22
23 Thanks your corporation 23
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