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HomePlug Powerline Communications

HomePlug Powerline Communications. Dr. Richard Newman, University of Florida Cameron McCaskill, Intellon Corporation April 27, 2005. HomePlug Presentation. HomePlug Alliance Overview PLC Challenges and Technologies HomePlug Standards Intellon Corporation

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HomePlug Powerline Communications

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  1. HomePlug Powerline Communications Dr. Richard Newman, University of Florida Cameron McCaskill, Intellon Corporation April 27, 2005

  2. HomePlug Presentation • HomePlug Alliance Overview • PLC Challenges and Technologies • HomePlug Standards • Intellon Corporation • HomePlug Applications – MSO Perspective

  3. HomePlug Powerline AllianceOverview

  4. The HomePlug Powerline Alliance • A non-profit corporation • A forum for the creation of an open standard and specification for home powerline networking products and services • accelerate the demand for standards-based products • sponsor market and user education programs http://www.homeplug.org/

  5. HomePlug Powerline Alliance • 50+ total alliance members and growing • Multi-market sponsor (board) members:

  6. HomePlug Alliance History • March 2000: Alliance founded by 13 industry-leading companies, Specification development process is created • May 2000: Baseline technology selected for HomePlug 1.0 • June 2001: HomePlug 1.0 Specification Selection and verification completed in less than 1 year • February 2003: HomePlug AV effort is started • Today: • Over 50 members strong • HomePlug 1.0 based products are sold worldwide • HomePlug AV Specification is in its final stages • HomePlug BPL effort is underway

  7. HomePlug networking specifications are the only globally recognized technology for high-speed powerline networking.

  8. Powerline Communication Challenges and Technologies

  9. PLC Challenges and Technologies • Powerline medium • Regulatory issues • PHY • MAC

  10. Powerline Medium - In-Home • Variable impulse response lengths • High attenuation • Frequency selective fading • Cyclo-stationary noise • Significant impulse noise • Episodically stable channels - unique per pair

  11. Powerline Medium - Impulse Response

  12. Powerline Medium - Frequency Response

  13. Powerline Medium - Impulse Noise Halogen light Yard light Hair dryer Light dimmer

  14. Powerline Regulatory Environment • FCC part 15 Rules in US • Licensed bands - limits • Notching for ham bands • Emission limits (esp. > 30 MHz) • International - • Variety of limits in Europe • Japan may revise rules to allow PLC • State of Flux = Next gen products will include programmable notching

  15. Powerline PHY Challenges • Usable bandwidth not contiguous • Regulatory emission limits • High noise floor • Appliances • RF interference • Impulse noise common • Selective, time-varying fading channels • Achieve high/full coverage • Operate near the Shannon limit

  16. Powerline PHY Technologies • Sync detect for PCS • Modulation • OFDM vs. Wavelets • Symbol length, shaping • Cyclic prefix (guard interval) • Forward Error Correction • Copy codes • Turbo codes vs. concatenated RS/CC • Block size choices • Cross-layer adaptation with MAC ARQ

  17. Powerline MAC Challenges • Must support channel adaptation • Handle impulse noise events • Cope with no real PCS • Cope with no collision detection • Provide delivery guarantees for multimedia • Provide security • Be very efficient

  18. Powerline MAC Technologies • Channel estimation • Virtual Carrier Sense • Contention-free TDMA • CSMA/CA for burst traffic • Framing • ARQ • Clock synchronization for jitter control • cryptography • RTS/CTS

  19. HomePlug Standards

  20. HomePlug Standards • HomePlug 1.0 • HomePlug AV • HomePlug BPL

  21. HomePlug 1.0

  22. HomePlug 1.0 PHY • OFDM • 76 carriers used from 4.4-20.7 MHz • 5.12us symbol time + 3.28us guard interval • BPSK/QPSK differential modulation • Concatenated Reed-Solomon/Convolutional code • Rate 1/2 and 3/4 code selection • Robust Performance in presence of Noise/Jammers • Up to 14 Mbps raw PHY rate/10 Mbps after coding • ROBO mode for broadcast/multicast • Physical Carrier Sense base on sync detection

  23. HomePlug 1.0 MAC • CSMA/CA • Virtual Carrier Sense - length in FC • 4 levels of priority for differentiated service • Advanced contention resolution • Variable tone map, including code rate selection • Packets of ~0.5ms to ~2ms • Packet bursting to avoid contention • Stop&Wait ARQ • 56-bit DES in CBC mode for privacy • Bridging function

  24. HomePlug 1.0 Performance

  25. HomePlug 1.0 History Q2 2004: 1 millionth IC sold Q4 2004: 2 millionth IC sold

  26. HomePlug AV

  27. HomePlug AV PHY • Windowed OFDM – 917 carriers1.8 – 30 MHz • 40.96us symbol time, 4.96us rolloff • Variable Cyclic Prefix • Turbo Convolution Codes, copy codes • Robust Frame Control (-5 dB) • Robo Modes (5 & 10 Mbps) • Bit Loaded Payload • Tone Maps synchronized with AC line cycle • coherent modulation up to 1024-QAM • 200 Mbps channel rate / 150 Mbps information rate

  28. HomePlug AV MAC • Central Controller (CCo) for network management • Two access methods • CSMA • TDMA • Continuous channel adaptation • 2-Level Framing with SACK • 80%+ efficiency range for video • 128-bit CBC mode AES-based security

  29. HomePlug AV MAC - Medium Access • All stations in logical network associate with CCo • CCo selection by station capabilities and location • TDMA link allocations are provided by CCo • CCo does call admission, schedules dynamically • Beacons generated by CCo contain schedules • Used by streams requiring guaranteed Quality of Service • HDTV, SDTV, Home Theater Audio, VoIP • CSMA/CA Regions specified by CCo • Similar to HomePlug 1.0 • For asynchronous traffic

  30. Advanced Network Management capabilities plug-and-play user and service provider set-up and configuration SNMP MIBs Co-existence modes HomePlug 1.0.1 Broadband over Powerline (BPL) multi-network operation and hidden node service HomePlug AV - Other Features

  31. HomePlug AV - Field Performance (34 homes)

  32. HomePlug AV Status

  33. HomePlug BPL

  34. HomePlug BPL: Yesterday The Internet Most BPL Solutions HomePlug v1.0

  35. The Vision: All Together Now The Internet HomePlug BPL HomePlug AV and v1.0

  36. HomePlug BPL Specification Status • Builds on the HomePlug AV Specification • Interoperable with HomePlug AV devices • Adds features unique to BPL • Multiple CCo Management • Routing & Concatenation • Leverages economy of scale of HomePlug AV • Same ICs will likely support both HomePlug AV & BPL • BPL Specification • Preliminary complete October 2005 • Ratified November-December 2005 • ICs available December 2005

  37. Intellon Corporation

  38. What Intellon Does We design and build integrated circuits that allow products to communicate over existing powerlines. EmbeddedProducts Adapters Plugging the resulting product into any power outlet provides power and reliable connectivity. Instant Networking: Just Plug It In!

  39. Intellon Corporation • World leader in powerline communications technology, IC sales and product enablement • Two IC product lines • HomePlug® – main revenue driver • SSC – legacy line for command and control, trucking • Have shipped over 5 million powerline ICs, including 2+ million HomePlug 1.0 chipsets • 80 employees (48 engineers) + 30 contractors • Offices in Ocala, Florida (HQ), Toronto and San Jose, CA

  40. Key Companies Enabled

  41. Adapters PL-Ethernet adapter PL-USB adapter PL-802.11g wireless range extender/AP Digital/analog audio bridge Embedded Products Desktop PC Media TV DSL gateway Cable gateway VoIP gateway IP security camera Satellite receiver Back channel application Audio streamer Products with Intellon ICs

  42. Intellon’s ICs HomePlug 1.0 – 14 Mbps IC: INT5200 Available: Now Add-In BOM Cost: $10 Primary Applications: Service provider gateways (cable, ADSL), broadband installation extension cord, set top box back channel, WiFi extension, VoIP extension, audio streaming, home security HomePlug 1.0 w/ Turbo Mode – 85 Mbps IC: INT5500 Available: Now Add-In BOM Cost: $12-15 Primary Applications: Standard definition (SD) television streaming, IPTV gateways and set top boxes, high-end/multi-room audio HomePlugAV – 200 Mbps IC: INT6000 Available: Q4 2005 Add-In BOM Cost: $17-20 Primary Application: Multiple high definition (HD) television streaming, multi-room PVR

  43. Service Providers Deploying HomePlug

  44. Quote from Comcast VP “Our 2004 trial confirmed that HomePlug adapters are reliable and simple to install, providing an excellent alternative in older homes, for example, where broadband installations can be more challenging…HomePlug adapters support our vision by enabling our customers to easily add additional computers and broadband devices wherever they want throughout their home.” Mitch Bowling, VP of Operations and Technical Support, Comcast Corporation, April 2005

  45. HomePlug ApplicationsMSO Perspective

  46. HomePlug Applications – Broadband Extension

  47. HomePlug Applications – VoIP Extension

  48. HomePlug Applications – WiFi Extension

  49. HomePlug Applications – Home Networking

  50. HomePlug Applications – HD Video Networking

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