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Analysis of IP over power lines in conjunction with ADSL as a rapid network deployment package.

Analysis of IP over power lines in conjunction with ADSL as a rapid network deployment package. David Mackie Supervisor: Professor Peter Clayton. Getting a Power Line Communication (PLC) network working. David Mackie Supervisor: Professor Peter Clayton.

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Analysis of IP over power lines in conjunction with ADSL as a rapid network deployment package.

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  1. Analysis of IP over power lines in conjunction with ADSL as a rapid network deployment package. David Mackie Supervisor: Professor Peter Clayton

  2. Getting a Power Line Communication (PLC) network working. David Mackie Supervisor: Professor Peter Clayton

  3. Overview:Power Line Communication (PLC) • Transmission of data using power circuit/lines • “IP-over-Power” Our Focus: • Low Voltage • Using the existing power circuit in a building

  4. Adapters Master Unit Power Circuit DSL Line Layout • Master Unit • (APM-45i) • Indoor Controller • Bridge to uplink • Adapters • (APA-15i-e) • Indoor • Like a modem

  5. Master Controller Ports Ethernet (Backbone) Serial (Terminal) Signal 3-phase power

  6. 3-Phase Power:5 Wires + 3-pin Plug = Problem • Master Controller • 5 wires - 3x Live, Neutral & “Protected” Earth • Switch signal between 2 “live” wires. Not Neutral • Separate signal injection method needed

  7. Solution: Signal Coupling • 2 “left over” wires • Wire back • Found to have a voltage • Left alone! Alternative • Another 3-pin plug • Coupling device • Signal connector • Waiting on last

  8. Automatic Configuration

  9. PLC Node Start-up Sequence • PLC Node starts up with parameters in flash memory • PLC Node synchronize with PLC master (slave nodes only) • PLC Node sends out DHCP request via Powerline for IP address • DHCP server reply with: • IP address, Subnet Mask, Gateway, DNS Server • Option 43: (ftp://username:password@146.231.126.13/plc/ia.cfg) • PLC Node obtains IP Address information, establish connection to FTP server and retrieves configuration file • PLC Node compares the parameters from the configuration file with its flash memory. If there is a difference in settings, slave node will copy the new values to flash and reboot

  10. Setup of Master though Serial plc> setup Setting up PLC system parameters IP parameters eth0 (public port) Address [192.168.0.1]: Netmask [255.255.0.0]: Broadcast [255.255.255.255]: Other IP parameters Default gateway [169.254.130.90]: PLC configuration Node Type (1=Master, 2=Foreman, 4=Repeater, 6=Droid, 8=Slave) [1]: Multi Master Environment (0=No, 1=Yes) [0]: Enter sum of selected carriers:(e.g. 3 = use <1> and <2>): Possible carriers are: (<1>= 19.8MHz, <2>= 22.8MHz, <4>= 25.2MHz) [2]: Coupling phase (0=P1-P2/P-N, 1=P1-P3, 2=P2-P3, 3=search best) [3]: Transmit power: Power for 22.8 MHz [8][dBm]: again 0, dgain 2 2 2 VLAN support Enable VLAN support (y/n) [n]?

  11. Residence: Cullen Bowels • THEN • To be implemented and tested in Cullen Bowels • Difficult to wire UTP • Not on IT’s roadmap NOW • Surprise email from Director of IT on 30 April • Cullen Bowels added to IT’s roadmap (3rd term) • New test bed needed • Seems to have stalled

  12. Alternative Products:HomePlug • Alliance of companies (mainly in the US) • HomePlug Certification Mark • Products from different companies work together • Bandwidth • Initially low 1.5Mbps • Now equal to Ascom • Higher bandwidths expected soon • Small number of users/network

  13. Alternative Products:South African • Virtual Technician Consultants (PTY) Ltd • South African Company • Designed from board up • Products • HomePlug 1.0.1 Compliant • Ethernet, Wireless & USB • 14.4 Mbps (4.5 real world) • Still to come

  14. 12V Work • Mini-network in Hamilton Building • Can it handle Eskom’s voltages • Comparison to HomePlug solution

  15. Questions?

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